Vulnerable Library - fsspec-2024.10.0-py3-none-any.whl
File-system specification
Library home page: https://files.pythonhosted.org/packages/c6/b2/454d6e7f0158951d8a78c2e1eb4f69ae81beb8dca5fee9809c6c99e9d0d0/fsspec-2024.10.0-py3-none-any.whl
Sample Path to Dependency File: /modules/programming/module_programming_themisml/.ws-temp-JAAXML-requirements.txt
Path to vulnerable library: /home/wss-scanner/.cache/pypoetry/virtualenvs/module-programming-themisml-6JtHFAOJ-py3.11/lib/python3.11/site-packages/fsspec-2024.10.0.dist-info
Found in HEAD commit: 2c2e4a13b710ceb8f65cd32664895e4278834389
Vulnerabilities
| Vulnerability |
Severity |
 CVSS |
Dependency |
Type |
Fixed in (fsspec version) |
Remediation Possible** |
| CVE-2026-104851 |
 High |
8.8 |
fsspec-2024.10.0-py3-none-any.whl |
Direct |
2026.6.0 |
❌ |
**In some cases, Remediation PR cannot be created automatically for a vulnerability despite the availability of remediation
Details
CVE-2026-104851
Vulnerable Library - fsspec-2024.10.0-py3-none-any.whl
File-system specification
Library home page: https://files.pythonhosted.org/packages/c6/b2/454d6e7f0158951d8a78c2e1eb4f69ae81beb8dca5fee9809c6c99e9d0d0/fsspec-2024.10.0-py3-none-any.whl
Sample Path to Dependency File: /modules/programming/module_programming_themisml/.ws-temp-JAAXML-requirements.txt
Path to vulnerable library: /home/wss-scanner/.cache/pypoetry/virtualenvs/module-programming-themisml-6JtHFAOJ-py3.11/lib/python3.11/site-packages/fsspec-2024.10.0.dist-info
Dependency Hierarchy:
- ❌ fsspec-2024.10.0-py3-none-any.whl (Vulnerable Library)
Found in HEAD commit: 2c2e4a13b710ceb8f65cd32664895e4278834389
Found in base branch: develop
Vulnerability Details
fsspec is a specification and Python implementation framework for filesystem interfaces. From 0.9.0 until 2026.6.0, fsspec.implementations.reference.ReferenceFileSystem evaluates fields from Kerchunk reference JSON documents through unrestricted jinja2.Template(...).render(...) calls in _process_references1._render_jinja, _process_templates, and _process_gen in fsspec/implementations/reference.py. A document supplied inline or fetched from an attacker-controlled URL can provide template expressions that execute Python code when the reference filesystem is opened, including through consumers such as xarray, before referenced data is read. The _process_gen path is reached whenever a document includes a gen array, while the other paths depend on template-related options and values. This issue is fixed in version 2026.6.0.
Publish Date: 2026-10-02
URL: CVE-2026-104851
CVSS 3 Score Details (8.8)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: Required
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: High
- Integrity Impact: High
- Availability Impact: High
For more information on CVSS3 Scores, click here.
Suggested Fix
Type: Upgrade version
Release Date: 2026-10-02
Fix Resolution: 2026.6.0
Step up your Open Source Security Game with Mend here
File-system specification
Library home page: https://files.pythonhosted.org/packages/c6/b2/454d6e7f0158951d8a78c2e1eb4f69ae81beb8dca5fee9809c6c99e9d0d0/fsspec-2024.10.0-py3-none-any.whl
Sample Path to Dependency File: /modules/programming/module_programming_themisml/.ws-temp-JAAXML-requirements.txt
Path to vulnerable library: /home/wss-scanner/.cache/pypoetry/virtualenvs/module-programming-themisml-6JtHFAOJ-py3.11/lib/python3.11/site-packages/fsspec-2024.10.0.dist-info
Found in HEAD commit: 2c2e4a13b710ceb8f65cd32664895e4278834389
Vulnerabilities
**In some cases, Remediation PR cannot be created automatically for a vulnerability despite the availability of remediation
Details
Vulnerable Library - fsspec-2024.10.0-py3-none-any.whl
File-system specification
Library home page: https://files.pythonhosted.org/packages/c6/b2/454d6e7f0158951d8a78c2e1eb4f69ae81beb8dca5fee9809c6c99e9d0d0/fsspec-2024.10.0-py3-none-any.whl
Sample Path to Dependency File: /modules/programming/module_programming_themisml/.ws-temp-JAAXML-requirements.txt
Path to vulnerable library: /home/wss-scanner/.cache/pypoetry/virtualenvs/module-programming-themisml-6JtHFAOJ-py3.11/lib/python3.11/site-packages/fsspec-2024.10.0.dist-info
Dependency Hierarchy:
Found in HEAD commit: 2c2e4a13b710ceb8f65cd32664895e4278834389
Found in base branch: develop
Vulnerability Details
fsspec is a specification and Python implementation framework for filesystem interfaces. From 0.9.0 until 2026.6.0, fsspec.implementations.reference.ReferenceFileSystem evaluates fields from Kerchunk reference JSON documents through unrestricted jinja2.Template(...).render(...) calls in _process_references1._render_jinja, _process_templates, and _process_gen in fsspec/implementations/reference.py. A document supplied inline or fetched from an attacker-controlled URL can provide template expressions that execute Python code when the reference filesystem is opened, including through consumers such as xarray, before referenced data is read. The _process_gen path is reached whenever a document includes a gen array, while the other paths depend on template-related options and values. This issue is fixed in version 2026.6.0.
Publish Date: 2026-10-02
URL: CVE-2026-104851
CVSS 3 Score Details (8.8)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: Required
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: High
- Integrity Impact: High
- Availability Impact: High
For more information on CVSS3 Scores, click here.Suggested Fix
Type: Upgrade version
Release Date: 2026-10-02
Fix Resolution: 2026.6.0
Step up your Open Source Security Game with Mend here