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⬆️(dependencies) update markdown to v3.8.1 [SECURITY]#16

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⬆️(dependencies) update markdown to v3.8.1 [SECURITY]#16
renovate[bot] wants to merge 1 commit into
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renovate/pypi-markdown-vulnerability

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@renovate renovate Bot commented Mar 8, 2026

This PR contains the following updates:

Package Change Age Confidence
markdown (changelog) ==3.8==3.8.1 age confidence

Python-Markdown has an Uncaught Exception

CVE-2025-69534 / GHSA-5wmx-573v-2qwq

More information

Details

Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. Because Python-Markdown does not catch this exception, any application that processes attacker-controlled Markdown may crash. This enables remote, unauthenticated Denial of Service in web applications, documentation systems, CI/CD pipelines, and any service that renders untrusted Markdown. The issue was acknowledged by the vendor and fixed in version 3.8.1. This issue causes a remote Denial of Service in any application parsing untrusted Markdown, and can lead to Information Disclosure through uncaught exceptions.

Severity

  • CVSS Score: 5.5 / 10 (Medium)
  • Vector String: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P

References

This data is provided by the GitHub Advisory Database (CC-BY 4.0).


Release Notes

Python-Markdown/markdown (markdown)

v3.8.1

Compare Source

Fixed
  • Ensure incomplete markup declaration in raw HTML doesn't crash parser (#​1534).
  • Fixed dropped content in md_in_html (#​1526).
  • Fixed HTML handling corner case that prevented some content from not being rendered (#​1528).

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