Allocation of Resources Without Limits or Throttling Affecting markdownify package, versions [,0.14.1)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-PYTHON-MARKDOWNIFY-9833926
- published27 Apr 2025
- disclosed26 Apr 2025
- creditSergey Tupikov
Introduced: 26 Apr 2025
NewCVE-2025-46656 (opens in a new tab)How to fix?
Upgrade markdownify to version 0.14.1 or higher.
Overview
markdownify is a Convert HTML to markdown.
Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling when processing malformed HTML tags. An attacker can cause excessive memory consumption by causing heading tags with very large values to be parsed.
PoC
markdownify("<html><body><h5555555555>Heading</h5555555555><p>paragraph</p></body></html>")