CVE-2025-46656
First published: Sat Apr 26 2025(Updated: )
python-markdownify (aka markdownify) before 0.14.1 allows large headline prefixes such as <h9999999> in addition to <h1> through <h6>. This causes memory consumption.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| markdownify | <0.14.1 | |
| pip/markdownify | <0.14.1 | 0.14.1 |
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Reference Links
- https://github.com/matthewwithanm/python-markdownify/compare/0.14.0...0.14.1
- https://github.com/matthewwithanm/python-markdownify/issues/143
- https://nvd.nist.gov/vuln/detail/CVE-2025-46656
- https://github.com/matthewwithanm/python-markdownify/commit/959561879693bf4a576f99c6733b50b01186aa08
- https://github.com/advisories/GHSA-7mpr-5m44-h73r (Advisory)
Frequently Asked Questions
What is the severity of CVE-2025-46656?
CVE-2025-46656 has a moderate severity level due to its potential for high memory consumption.
How do I fix CVE-2025-46656?
To fix CVE-2025-46656, upgrade python-markdownify to version 0.14.1 or later.
What version of python-markdownify is affected by CVE-2025-46656?
Versions of python-markdownify before 0.14.1 are affected by CVE-2025-46656.
What kind of issue does CVE-2025-46656 introduce?
CVE-2025-46656 allows for extremely large headline prefixes, leading to excessive memory consumption.
Who is the vendor for the affected software in CVE-2025-46656?
The vendor for the affected software in CVE-2025-46656 is python-markdownify.
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