Vulnerable Library - tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed.
Library home page: https://files.pythonhosted.org/packages/19/bb/b6c3d1668d2b10ad38a584f3a1ec9737984e274f8b708e09fcbb96427f5c/tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Path to dependency file: /requirements.txt
Path to vulnerable library: /requirements.txt,/tmp/ws-scm/HydraPlay
Vulnerabilities
| Vulnerability |
Severity |
 CVSS |
Dependency |
Type |
Fixed in (tornado version) |
Remediation Possible** |
| CVE-2026-49853 |
 High |
7.7 |
tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl |
Direct |
6.5.6 |
❌ |
| CVE-2026-49855 |
High |
7.5 |
tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl |
Direct |
6.5.6 |
❌ |
| CVE-2026-31958 |
High |
7.5 |
tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl |
Direct |
6.5.5 |
❌ |
| CVE-2025-67726 |
High |
7.5 |
tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl |
Direct |
6.5.3 |
❌ |
| CVE-2025-67725 |
High |
7.5 |
tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl |
Direct |
6.5.3 |
❌ |
| CVE-2025-47287 |
High |
7.5 |
tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl |
Direct |
6.5 |
❌ |
| CVE-2024-52804 |
High |
7.5 |
tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl |
Direct |
tornado - 6.4.2,tornado - 6.4.2 |
❌ |
| CVE-2026-35536 |
High |
7.2 |
tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl |
Direct |
6.5.5 |
❌ |
| CVE-2023-28370 |
 Medium |
6.1 |
tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl |
Direct |
tornado - 6.3.2,tornado - 6.3.2 |
❌ |
| WS-2023-0296 |
Medium |
5.6 |
tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl |
Direct |
N/A |
❌ |
| CVE-2025-67724 |
Medium |
5.4 |
tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl |
Direct |
6.5.3 |
❌ |
| CVE-2026-49854 |
Medium |
5.3 |
tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl |
Direct |
6.5.6 |
❌ |
**In some cases, Remediation PR cannot be created automatically for a vulnerability despite the availability of remediation
Details
CVE-2026-49853
Vulnerable Library - tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed.
Library home page: https://files.pythonhosted.org/packages/19/bb/b6c3d1668d2b10ad38a584f3a1ec9737984e274f8b708e09fcbb96427f5c/tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Path to dependency file: /requirements.txt
Path to vulnerable library: /requirements.txt,/tmp/ws-scm/HydraPlay
Dependency Hierarchy:
- ❌ tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl (Vulnerable Library)
Found in base branch: master
Vulnerability Details
Tornado is a Python web framework and asynchronous networking library. Prior to 6.5.6, SimpleAsyncHTTPClient shallow-copied redirected requests and removed only the Host header, leaving Authorization, auth_username, auth_password, and auth_mode in place when a redirect changed scheme, host, or port. This issue is fixed in version 6.5.6.
Publish Date: 2026-07-14
URL: CVE-2026-49853
CVSS 3 Score Details (7.7)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: Low
- User Interaction: None
- Scope: Changed
- Impact Metrics:
- Confidentiality Impact: High
- Integrity Impact: None
- Availability Impact: None
For more information on CVSS3 Scores, click here.
Suggested Fix
Type: Upgrade version
Origin: GHSA-3x9g-8vmp-wqvf
Release Date: 2026-06-15
Fix Resolution: 6.5.6
Step up your Open Source Security Game with Mend here
CVE-2026-49855
Vulnerable Library - tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed.
Library home page: https://files.pythonhosted.org/packages/19/bb/b6c3d1668d2b10ad38a584f3a1ec9737984e274f8b708e09fcbb96427f5c/tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Path to dependency file: /requirements.txt
Path to vulnerable library: /requirements.txt,/tmp/ws-scm/HydraPlay
Dependency Hierarchy:
- ❌ tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl (Vulnerable Library)
Found in base branch: master
Vulnerability Details
Tornado is a Python web framework and asynchronous networking library. Prior to 6.5.6, Tornado gzip decompression routines processed limited-size chunks but did not enforce an overall limit on accumulated decompressed chunks, allowing a malicious server accessed by SimpleAsyncHTTPClient or an HTTPServer configured with decompress_request=True to consume effectively unlimited memory. This issue is fixed in version 6.5.6.
Publish Date: 2026-07-14
URL: CVE-2026-49855
CVSS 3 Score Details (7.5)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: None
- Integrity Impact: None
- Availability Impact: High
For more information on CVSS3 Scores, click here.
Suggested Fix
Type: Upgrade version
Origin: GHSA-mgf9-4vpg-hj56
Release Date: 2026-06-15
Fix Resolution: 6.5.6
Step up your Open Source Security Game with Mend here
CVE-2026-31958
Vulnerable Library - tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed.
Library home page: https://files.pythonhosted.org/packages/19/bb/b6c3d1668d2b10ad38a584f3a1ec9737984e274f8b708e09fcbb96427f5c/tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Path to dependency file: /requirements.txt
Path to vulnerable library: /requirements.txt,/tmp/ws-scm/HydraPlay
Dependency Hierarchy:
- ❌ tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl (Vulnerable Library)
Found in base branch: master
Vulnerability Details
Tornado is a Python web framework and asynchronous networking library. In versions of Tornado prior to 6.5.5, the only limit on the number of parts in multipart/form-data is the max_body_size setting (default 100MB). Since parsing occurs synchronously on the main thread, this creates the possibility of denial-of-service due to the cost of parsing very large multipart bodies with many parts. This vulnerability is fixed in 6.5.5.
Publish Date: 2026-03-11
URL: CVE-2026-31958
CVSS 3 Score Details (7.5)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: None
- Integrity Impact: None
- Availability Impact: High
For more information on CVSS3 Scores, click here.
Suggested Fix
Type: Upgrade version
Origin: GHSA-qjxf-f2mg-c6mc
Release Date: 2026-03-11
Fix Resolution: 6.5.5
Step up your Open Source Security Game with Mend here
CVE-2025-67726
Vulnerable Library - tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed.
Library home page: https://files.pythonhosted.org/packages/19/bb/b6c3d1668d2b10ad38a584f3a1ec9737984e274f8b708e09fcbb96427f5c/tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Path to dependency file: /requirements.txt
Path to vulnerable library: /requirements.txt,/tmp/ws-scm/HydraPlay
Dependency Hierarchy:
- ❌ tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl (Vulnerable Library)
Found in base branch: master
Vulnerability Details
Tornado is a Python web framework and asynchronous networking library. Versions 6.5.2 and below use an inefficient algorithm when parsing parameters for HTTP header values, potentially causing a DoS. The _parseparam function in httputil.py is used to parse specific HTTP header values, such as those in multipart/form-data and repeatedly calls string.count() within a nested loop while processing quoted semicolons. If an attacker sends a request with a large number of maliciously crafted parameters in a Content-Disposition header, the server's CPU usage increases quadratically (O(n²)) during parsing. Due to Tornado's single event loop architecture, a single malicious request can cause the entire server to become unresponsive for an extended period. This issue is fixed in version 6.5.3.
Publish Date: 2025-12-12
URL: CVE-2025-67726
CVSS 3 Score Details (7.5)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: None
- Integrity Impact: None
- Availability Impact: High
For more information on CVSS3 Scores, click here.
Suggested Fix
Type: Upgrade version
Release Date: 2025-12-12
Fix Resolution: 6.5.3
Step up your Open Source Security Game with Mend here
CVE-2025-67725
Vulnerable Library - tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed.
Library home page: https://files.pythonhosted.org/packages/19/bb/b6c3d1668d2b10ad38a584f3a1ec9737984e274f8b708e09fcbb96427f5c/tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Path to dependency file: /requirements.txt
Path to vulnerable library: /requirements.txt,/tmp/ws-scm/HydraPlay
Dependency Hierarchy:
- ❌ tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl (Vulnerable Library)
Found in base branch: master
Vulnerability Details
Tornado is a Python web framework and asynchronous networking library. In versions 6.5.2 and below, a single maliciously crafted HTTP request can block the server's event loop for an extended period, caused by the HTTPHeaders.add method. The function accumulates values using string concatenation when the same header name is repeated, causing a Denial of Service (DoS). Due to Python string immutability, each concatenation copies the entire string, resulting in O(n²) time complexity. The severity can vary from high if max_header_size has been increased from its default, to low if it has its default value of 64KB. This issue is fixed in version 6.5.3.
Publish Date: 2025-12-12
URL: CVE-2025-67725
CVSS 3 Score Details (7.5)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: None
- Integrity Impact: None
- Availability Impact: High
For more information on CVSS3 Scores, click here.
Suggested Fix
Type: Upgrade version
Release Date: 2025-12-12
Fix Resolution: 6.5.3
Step up your Open Source Security Game with Mend here
CVE-2025-47287
Vulnerable Library - tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed.
Library home page: https://files.pythonhosted.org/packages/19/bb/b6c3d1668d2b10ad38a584f3a1ec9737984e274f8b708e09fcbb96427f5c/tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Path to dependency file: /requirements.txt
Path to vulnerable library: /requirements.txt,/tmp/ws-scm/HydraPlay
Dependency Hierarchy:
- ❌ tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl (Vulnerable Library)
Found in base branch: master
Vulnerability Details
Tornado is a Python web framework and asynchronous networking library. When Tornado's "multipart/form-data" parser encounters certain errors, it logs a warning but continues trying to parse the remainder of the data. This allows remote attackers to generate an extremely high volume of logs, constituting a DoS attack. This DoS is compounded by the fact that the logging subsystem is synchronous. All versions of Tornado prior to 6.5.0 are affected. The vulnerable parser is enabled by default. Upgrade to Tornado version 6.50 to receive a patch. As a workaround, risk can be mitigated by blocking "Content-Type: multipart/form-data" in a proxy.
Mend Note: The description of this vulnerability differs from MITRE.
Publish Date: 2025-05-15
URL: CVE-2025-47287
CVSS 3 Score Details (7.5)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: None
- Integrity Impact: None
- Availability Impact: High
For more information on CVSS3 Scores, click here.
Suggested Fix
Type: Upgrade version
Origin: GHSA-7cx3-6m66-7c5m
Release Date: 2025-05-15
Fix Resolution: 6.5
Step up your Open Source Security Game with Mend here
CVE-2024-52804
Vulnerable Library - tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed.
Library home page: https://files.pythonhosted.org/packages/19/bb/b6c3d1668d2b10ad38a584f3a1ec9737984e274f8b708e09fcbb96427f5c/tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Path to dependency file: /requirements.txt
Path to vulnerable library: /requirements.txt,/tmp/ws-scm/HydraPlay
Dependency Hierarchy:
- ❌ tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl (Vulnerable Library)
Found in base branch: master
Vulnerability Details
Tornado is a Python web framework and asynchronous networking library. The algorithm used for parsing HTTP cookies in Tornado versions prior to 6.4.2 sometimes has quadratic complexity, leading to excessive CPU consumption when parsing maliciously-crafted cookie headers. This parsing occurs in the event loop thread and may block the processing of other requests. Version 6.4.2 fixes the issue.
Publish Date: 2024-11-22
URL: CVE-2024-52804
CVSS 3 Score Details (7.5)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: None
- Integrity Impact: None
- Availability Impact: High
For more information on CVSS3 Scores, click here.
Suggested Fix
Type: Upgrade version
Origin: GHSA-8w49-h785-mj3c
Release Date: 2024-11-22
Fix Resolution: tornado - 6.4.2,tornado - 6.4.2
Step up your Open Source Security Game with Mend here
CVE-2026-35536
Vulnerable Library - tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed.
Library home page: https://files.pythonhosted.org/packages/19/bb/b6c3d1668d2b10ad38a584f3a1ec9737984e274f8b708e09fcbb96427f5c/tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Path to dependency file: /requirements.txt
Path to vulnerable library: /requirements.txt,/tmp/ws-scm/HydraPlay
Dependency Hierarchy:
- ❌ tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl (Vulnerable Library)
Found in base branch: master
Vulnerability Details
In Tornado before 6.5.5, cookie attribute injection could occur because the domain, path, and samesite arguments to .RequestHandler.set_cookie were not checked for crafted characters.
Publish Date: 2026-04-03
URL: CVE-2026-35536
CVSS 3 Score Details (7.2)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: None
- Scope: Changed
- Impact Metrics:
- Confidentiality Impact: Low
- Integrity Impact: Low
- Availability Impact: None
For more information on CVSS3 Scores, click here.
Suggested Fix
Type: Upgrade version
Origin: GHSA-78cv-mqj4-43f7
Release Date: 2026-04-03
Fix Resolution: 6.5.5
Step up your Open Source Security Game with Mend here
CVE-2023-28370
Vulnerable Library - tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed.
Library home page: https://files.pythonhosted.org/packages/19/bb/b6c3d1668d2b10ad38a584f3a1ec9737984e274f8b708e09fcbb96427f5c/tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Path to dependency file: /requirements.txt
Path to vulnerable library: /requirements.txt,/tmp/ws-scm/HydraPlay
Dependency Hierarchy:
- ❌ tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl (Vulnerable Library)
Found in base branch: master
Vulnerability Details
Open redirect vulnerability in Tornado versions 6.3.1 and earlier allows a remote unauthenticated attacker to redirect a user to an arbitrary web site and conduct a phishing attack by having user access a specially crafted URL.
Publish Date: 2023-05-25
URL: CVE-2023-28370
CVSS 3 Score Details (6.1)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: Required
- Scope: Changed
- Impact Metrics:
- Confidentiality Impact: Low
- Integrity Impact: Low
- Availability Impact: None
For more information on CVSS3 Scores, click here.
Suggested Fix
Type: Upgrade version
Origin: GHSA-hj3f-6gcp-jg8j
Release Date: 2023-05-25
Fix Resolution: tornado - 6.3.2,tornado - 6.3.2
Step up your Open Source Security Game with Mend here
WS-2023-0296
Vulnerable Library - tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed.
Library home page: https://files.pythonhosted.org/packages/19/bb/b6c3d1668d2b10ad38a584f3a1ec9737984e274f8b708e09fcbb96427f5c/tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Path to dependency file: /requirements.txt
Path to vulnerable library: /requirements.txt,/tmp/ws-scm/HydraPlay
Dependency Hierarchy:
- ❌ tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl (Vulnerable Library)
Found in base branch: master
Vulnerability Details
Summary Tornado interprets "-", "+", and "_" in chunk length and "Content-Length" values, which are not allowed by the HTTP RFCs. This can result in request smuggling when Tornado is deployed behind certain proxies that interpret those non-standard characters differently. This is known to apply to older versions of haproxy, although the current release is not affected. Details Tornado uses the "int" constructor to parse the values of "Content-Length" headers and chunk lengths in the following locations: "tornado/http1connection.py:445" self._expected_content_remaining = int(headers["Content-Length"]) "tornado/http1connection.py:621" content_length = int(headers["Content-Length"]) # type: Optional[int] "tornado/http1connection.py:671" chunk_len = int(chunk_len_str.strip(), 16) Because "int("0_0") == int("+0") == int("-0") == int("0")", using the "int" constructor to parse and validate strings that should contain only ASCII digits is not a good strategy.
Publish Date: 2026-05-15
URL: WS-2023-0296
CVSS 3 Score Details (5.6)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: High
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: Low
- Integrity Impact: Low
- Availability Impact: Low
For more information on CVSS3 Scores, click here.
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CVE-2025-67724
Vulnerable Library - tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed.
Library home page: https://files.pythonhosted.org/packages/19/bb/b6c3d1668d2b10ad38a584f3a1ec9737984e274f8b708e09fcbb96427f5c/tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Path to dependency file: /requirements.txt
Path to vulnerable library: /requirements.txt,/tmp/ws-scm/HydraPlay
Dependency Hierarchy:
- ❌ tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl (Vulnerable Library)
Found in base branch: master
Vulnerability Details
Tornado is a Python web framework and asynchronous networking library. In versions 6.5.2 and below, the supplied reason phrase is used unescaped in HTTP headers (where it could be used for header injection) or in HTML in the default error page (where it could be used for XSS) and can be exploited by passing untrusted or malicious data into the reason argument. Used by both RequestHandler.set_status and tornado.web.HTTPError, the argument is designed to allow applications to pass custom "reason" phrases (the "Not Found" in HTTP/1.1 404 Not Found) to the HTTP status line (mainly for non-standard status codes). This issue is fixed in version 6.5.3.
Publish Date: 2025-12-12
URL: CVE-2025-67724
CVSS 3 Score Details (5.4)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: Required
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: Low
- Integrity Impact: Low
- Availability Impact: None
For more information on CVSS3 Scores, click here.
Suggested Fix
Type: Upgrade version
Release Date: 2025-12-12
Fix Resolution: 6.5.3
Step up your Open Source Security Game with Mend here
CVE-2026-49854
Vulnerable Library - tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed.
Library home page: https://files.pythonhosted.org/packages/19/bb/b6c3d1668d2b10ad38a584f3a1ec9737984e274f8b708e09fcbb96427f5c/tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Path to dependency file: /requirements.txt
Path to vulnerable library: /requirements.txt,/tmp/ws-scm/HydraPlay
Dependency Hierarchy:
- ❌ tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl (Vulnerable Library)
Found in base branch: master
Vulnerability Details
Tornado is a Python web framework and asynchronous networking library. Prior to 6.5.6, the optional native extension tornado.speedups implemented websocket_mask without validating that the mask argument is exactly four bytes, allowing the C function to read up to three bytes beyond the provided buffer when reached through Tornado XSRF token decoding with the native extension active. This issue is fixed in version 6.5.6.
Publish Date: 2026-07-14
URL: CVE-2026-49854
CVSS 3 Score Details (5.3)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: Low
- Integrity Impact: None
- Availability Impact: None
For more information on CVSS3 Scores, click here.
Suggested Fix
Type: Upgrade version
Origin: GHSA-cx3h-4qpv-8hc9
Release Date: 2026-06-13
Fix Resolution: 6.5.6
Step up your Open Source Security Game with Mend here
Tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed.
Library home page: https://files.pythonhosted.org/packages/19/bb/b6c3d1668d2b10ad38a584f3a1ec9737984e274f8b708e09fcbb96427f5c/tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Path to dependency file: /requirements.txt
Path to vulnerable library: /requirements.txt,/tmp/ws-scm/HydraPlay
Vulnerabilities
**In some cases, Remediation PR cannot be created automatically for a vulnerability despite the availability of remediation
Details
Vulnerable Library - tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed.
Library home page: https://files.pythonhosted.org/packages/19/bb/b6c3d1668d2b10ad38a584f3a1ec9737984e274f8b708e09fcbb96427f5c/tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Path to dependency file: /requirements.txt
Path to vulnerable library: /requirements.txt,/tmp/ws-scm/HydraPlay
Dependency Hierarchy:
Found in base branch: master
Vulnerability Details
Tornado is a Python web framework and asynchronous networking library. Prior to 6.5.6, SimpleAsyncHTTPClient shallow-copied redirected requests and removed only the Host header, leaving Authorization, auth_username, auth_password, and auth_mode in place when a redirect changed scheme, host, or port. This issue is fixed in version 6.5.6.
Publish Date: 2026-07-14
URL: CVE-2026-49853
CVSS 3 Score Details (7.7)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: Low
- User Interaction: None
- Scope: Changed
- Impact Metrics:
- Confidentiality Impact: High
- Integrity Impact: None
- Availability Impact: None
For more information on CVSS3 Scores, click here.Suggested Fix
Type: Upgrade version
Origin: GHSA-3x9g-8vmp-wqvf
Release Date: 2026-06-15
Fix Resolution: 6.5.6
Step up your Open Source Security Game with Mend here
Vulnerable Library - tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed.
Library home page: https://files.pythonhosted.org/packages/19/bb/b6c3d1668d2b10ad38a584f3a1ec9737984e274f8b708e09fcbb96427f5c/tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Path to dependency file: /requirements.txt
Path to vulnerable library: /requirements.txt,/tmp/ws-scm/HydraPlay
Dependency Hierarchy:
Found in base branch: master
Vulnerability Details
Tornado is a Python web framework and asynchronous networking library. Prior to 6.5.6, Tornado gzip decompression routines processed limited-size chunks but did not enforce an overall limit on accumulated decompressed chunks, allowing a malicious server accessed by SimpleAsyncHTTPClient or an HTTPServer configured with decompress_request=True to consume effectively unlimited memory. This issue is fixed in version 6.5.6.
Publish Date: 2026-07-14
URL: CVE-2026-49855
CVSS 3 Score Details (7.5)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: None
- Integrity Impact: None
- Availability Impact: High
For more information on CVSS3 Scores, click here.Suggested Fix
Type: Upgrade version
Origin: GHSA-mgf9-4vpg-hj56
Release Date: 2026-06-15
Fix Resolution: 6.5.6
Step up your Open Source Security Game with Mend here
Vulnerable Library - tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed.
Library home page: https://files.pythonhosted.org/packages/19/bb/b6c3d1668d2b10ad38a584f3a1ec9737984e274f8b708e09fcbb96427f5c/tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Path to dependency file: /requirements.txt
Path to vulnerable library: /requirements.txt,/tmp/ws-scm/HydraPlay
Dependency Hierarchy:
Found in base branch: master
Vulnerability Details
Tornado is a Python web framework and asynchronous networking library. In versions of Tornado prior to 6.5.5, the only limit on the number of parts in multipart/form-data is the max_body_size setting (default 100MB). Since parsing occurs synchronously on the main thread, this creates the possibility of denial-of-service due to the cost of parsing very large multipart bodies with many parts. This vulnerability is fixed in 6.5.5.
Publish Date: 2026-03-11
URL: CVE-2026-31958
CVSS 3 Score Details (7.5)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: None
- Integrity Impact: None
- Availability Impact: High
For more information on CVSS3 Scores, click here.Suggested Fix
Type: Upgrade version
Origin: GHSA-qjxf-f2mg-c6mc
Release Date: 2026-03-11
Fix Resolution: 6.5.5
Step up your Open Source Security Game with Mend here
Vulnerable Library - tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed.
Library home page: https://files.pythonhosted.org/packages/19/bb/b6c3d1668d2b10ad38a584f3a1ec9737984e274f8b708e09fcbb96427f5c/tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Path to dependency file: /requirements.txt
Path to vulnerable library: /requirements.txt,/tmp/ws-scm/HydraPlay
Dependency Hierarchy:
Found in base branch: master
Vulnerability Details
Tornado is a Python web framework and asynchronous networking library. Versions 6.5.2 and below use an inefficient algorithm when parsing parameters for HTTP header values, potentially causing a DoS. The _parseparam function in httputil.py is used to parse specific HTTP header values, such as those in multipart/form-data and repeatedly calls string.count() within a nested loop while processing quoted semicolons. If an attacker sends a request with a large number of maliciously crafted parameters in a Content-Disposition header, the server's CPU usage increases quadratically (O(n²)) during parsing. Due to Tornado's single event loop architecture, a single malicious request can cause the entire server to become unresponsive for an extended period. This issue is fixed in version 6.5.3.
Publish Date: 2025-12-12
URL: CVE-2025-67726
CVSS 3 Score Details (7.5)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: None
- Integrity Impact: None
- Availability Impact: High
For more information on CVSS3 Scores, click here.Suggested Fix
Type: Upgrade version
Release Date: 2025-12-12
Fix Resolution: 6.5.3
Step up your Open Source Security Game with Mend here
Vulnerable Library - tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed.
Library home page: https://files.pythonhosted.org/packages/19/bb/b6c3d1668d2b10ad38a584f3a1ec9737984e274f8b708e09fcbb96427f5c/tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Path to dependency file: /requirements.txt
Path to vulnerable library: /requirements.txt,/tmp/ws-scm/HydraPlay
Dependency Hierarchy:
Found in base branch: master
Vulnerability Details
Tornado is a Python web framework and asynchronous networking library. In versions 6.5.2 and below, a single maliciously crafted HTTP request can block the server's event loop for an extended period, caused by the HTTPHeaders.add method. The function accumulates values using string concatenation when the same header name is repeated, causing a Denial of Service (DoS). Due to Python string immutability, each concatenation copies the entire string, resulting in O(n²) time complexity. The severity can vary from high if max_header_size has been increased from its default, to low if it has its default value of 64KB. This issue is fixed in version 6.5.3.
Publish Date: 2025-12-12
URL: CVE-2025-67725
CVSS 3 Score Details (7.5)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: None
- Integrity Impact: None
- Availability Impact: High
For more information on CVSS3 Scores, click here.Suggested Fix
Type: Upgrade version
Release Date: 2025-12-12
Fix Resolution: 6.5.3
Step up your Open Source Security Game with Mend here
Vulnerable Library - tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed.
Library home page: https://files.pythonhosted.org/packages/19/bb/b6c3d1668d2b10ad38a584f3a1ec9737984e274f8b708e09fcbb96427f5c/tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Path to dependency file: /requirements.txt
Path to vulnerable library: /requirements.txt,/tmp/ws-scm/HydraPlay
Dependency Hierarchy:
Found in base branch: master
Vulnerability Details
Tornado is a Python web framework and asynchronous networking library. When Tornado's "multipart/form-data" parser encounters certain errors, it logs a warning but continues trying to parse the remainder of the data. This allows remote attackers to generate an extremely high volume of logs, constituting a DoS attack. This DoS is compounded by the fact that the logging subsystem is synchronous. All versions of Tornado prior to 6.5.0 are affected. The vulnerable parser is enabled by default. Upgrade to Tornado version 6.50 to receive a patch. As a workaround, risk can be mitigated by blocking "Content-Type: multipart/form-data" in a proxy.
Mend Note: The description of this vulnerability differs from MITRE.
Publish Date: 2025-05-15
URL: CVE-2025-47287
CVSS 3 Score Details (7.5)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: None
- Integrity Impact: None
- Availability Impact: High
For more information on CVSS3 Scores, click here.Suggested Fix
Type: Upgrade version
Origin: GHSA-7cx3-6m66-7c5m
Release Date: 2025-05-15
Fix Resolution: 6.5
Step up your Open Source Security Game with Mend here
Vulnerable Library - tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed.
Library home page: https://files.pythonhosted.org/packages/19/bb/b6c3d1668d2b10ad38a584f3a1ec9737984e274f8b708e09fcbb96427f5c/tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Path to dependency file: /requirements.txt
Path to vulnerable library: /requirements.txt,/tmp/ws-scm/HydraPlay
Dependency Hierarchy:
Found in base branch: master
Vulnerability Details
Tornado is a Python web framework and asynchronous networking library. The algorithm used for parsing HTTP cookies in Tornado versions prior to 6.4.2 sometimes has quadratic complexity, leading to excessive CPU consumption when parsing maliciously-crafted cookie headers. This parsing occurs in the event loop thread and may block the processing of other requests. Version 6.4.2 fixes the issue.
Publish Date: 2024-11-22
URL: CVE-2024-52804
CVSS 3 Score Details (7.5)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: None
- Integrity Impact: None
- Availability Impact: High
For more information on CVSS3 Scores, click here.Suggested Fix
Type: Upgrade version
Origin: GHSA-8w49-h785-mj3c
Release Date: 2024-11-22
Fix Resolution: tornado - 6.4.2,tornado - 6.4.2
Step up your Open Source Security Game with Mend here
Vulnerable Library - tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed.
Library home page: https://files.pythonhosted.org/packages/19/bb/b6c3d1668d2b10ad38a584f3a1ec9737984e274f8b708e09fcbb96427f5c/tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Path to dependency file: /requirements.txt
Path to vulnerable library: /requirements.txt,/tmp/ws-scm/HydraPlay
Dependency Hierarchy:
Found in base branch: master
Vulnerability Details
In Tornado before 6.5.5, cookie attribute injection could occur because the domain, path, and samesite arguments to .RequestHandler.set_cookie were not checked for crafted characters.
Publish Date: 2026-04-03
URL: CVE-2026-35536
CVSS 3 Score Details (7.2)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: None
- Scope: Changed
- Impact Metrics:
- Confidentiality Impact: Low
- Integrity Impact: Low
- Availability Impact: None
For more information on CVSS3 Scores, click here.Suggested Fix
Type: Upgrade version
Origin: GHSA-78cv-mqj4-43f7
Release Date: 2026-04-03
Fix Resolution: 6.5.5
Step up your Open Source Security Game with Mend here
Vulnerable Library - tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed.
Library home page: https://files.pythonhosted.org/packages/19/bb/b6c3d1668d2b10ad38a584f3a1ec9737984e274f8b708e09fcbb96427f5c/tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Path to dependency file: /requirements.txt
Path to vulnerable library: /requirements.txt,/tmp/ws-scm/HydraPlay
Dependency Hierarchy:
Found in base branch: master
Vulnerability Details
Open redirect vulnerability in Tornado versions 6.3.1 and earlier allows a remote unauthenticated attacker to redirect a user to an arbitrary web site and conduct a phishing attack by having user access a specially crafted URL.
Publish Date: 2023-05-25
URL: CVE-2023-28370
CVSS 3 Score Details (6.1)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: Required
- Scope: Changed
- Impact Metrics:
- Confidentiality Impact: Low
- Integrity Impact: Low
- Availability Impact: None
For more information on CVSS3 Scores, click here.Suggested Fix
Type: Upgrade version
Origin: GHSA-hj3f-6gcp-jg8j
Release Date: 2023-05-25
Fix Resolution: tornado - 6.3.2,tornado - 6.3.2
Step up your Open Source Security Game with Mend here
Vulnerable Library - tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed.
Library home page: https://files.pythonhosted.org/packages/19/bb/b6c3d1668d2b10ad38a584f3a1ec9737984e274f8b708e09fcbb96427f5c/tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Path to dependency file: /requirements.txt
Path to vulnerable library: /requirements.txt,/tmp/ws-scm/HydraPlay
Dependency Hierarchy:
Found in base branch: master
Vulnerability Details
Summary Tornado interprets "-", "+", and "_" in chunk length and "Content-Length" values, which are not allowed by the HTTP RFCs. This can result in request smuggling when Tornado is deployed behind certain proxies that interpret those non-standard characters differently. This is known to apply to older versions of haproxy, although the current release is not affected. Details Tornado uses the "int" constructor to parse the values of "Content-Length" headers and chunk lengths in the following locations: "tornado/http1connection.py:445" self._expected_content_remaining = int(headers["Content-Length"]) "tornado/http1connection.py:621" content_length = int(headers["Content-Length"]) # type: Optional[int] "tornado/http1connection.py:671" chunk_len = int(chunk_len_str.strip(), 16) Because "int("0_0") == int("+0") == int("-0") == int("0")", using the "int" constructor to parse and validate strings that should contain only ASCII digits is not a good strategy.
Publish Date: 2026-05-15
URL: WS-2023-0296
CVSS 3 Score Details (5.6)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: High
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: Low
- Integrity Impact: Low
- Availability Impact: Low
For more information on CVSS3 Scores, click here.Step up your Open Source Security Game with Mend here
Vulnerable Library - tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed.
Library home page: https://files.pythonhosted.org/packages/19/bb/b6c3d1668d2b10ad38a584f3a1ec9737984e274f8b708e09fcbb96427f5c/tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Path to dependency file: /requirements.txt
Path to vulnerable library: /requirements.txt,/tmp/ws-scm/HydraPlay
Dependency Hierarchy:
Found in base branch: master
Vulnerability Details
Tornado is a Python web framework and asynchronous networking library. In versions 6.5.2 and below, the supplied reason phrase is used unescaped in HTTP headers (where it could be used for header injection) or in HTML in the default error page (where it could be used for XSS) and can be exploited by passing untrusted or malicious data into the reason argument. Used by both RequestHandler.set_status and tornado.web.HTTPError, the argument is designed to allow applications to pass custom "reason" phrases (the "Not Found" in HTTP/1.1 404 Not Found) to the HTTP status line (mainly for non-standard status codes). This issue is fixed in version 6.5.3.
Publish Date: 2025-12-12
URL: CVE-2025-67724
CVSS 3 Score Details (5.4)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: Required
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: Low
- Integrity Impact: Low
- Availability Impact: None
For more information on CVSS3 Scores, click here.Suggested Fix
Type: Upgrade version
Release Date: 2025-12-12
Fix Resolution: 6.5.3
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Vulnerable Library - tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed.
Library home page: https://files.pythonhosted.org/packages/19/bb/b6c3d1668d2b10ad38a584f3a1ec9737984e274f8b708e09fcbb96427f5c/tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Path to dependency file: /requirements.txt
Path to vulnerable library: /requirements.txt,/tmp/ws-scm/HydraPlay
Dependency Hierarchy:
Found in base branch: master
Vulnerability Details
Tornado is a Python web framework and asynchronous networking library. Prior to 6.5.6, the optional native extension tornado.speedups implemented websocket_mask without validating that the mask argument is exactly four bytes, allowing the C function to read up to three bytes beyond the provided buffer when reached through Tornado XSRF token decoding with the native extension active. This issue is fixed in version 6.5.6.
Publish Date: 2026-07-14
URL: CVE-2026-49854
CVSS 3 Score Details (5.3)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: Low
- Integrity Impact: None
- Availability Impact: None
For more information on CVSS3 Scores, click here.Suggested Fix
Type: Upgrade version
Origin: GHSA-cx3h-4qpv-8hc9
Release Date: 2026-06-13
Fix Resolution: 6.5.6
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