Vulnerability Monitor

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CVE-2025-46656

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.

Published

2025-04-26T22:15:17.260

Last Modified

2025-10-16T20:24:26.727

Status

Analyzed

Source

[email protected]

Severity

CVSSv3.1: 2.9 (LOW)

Weaknesses

Type: Secondary
CWE-1284

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	matthewwithanm	markdownify	< 0.14.1	Yes

References

https://github.com/matthewwithanm/python-markdownify/compare/0.14.0...0.14.1 Patch ([email protected])
https://github.com/matthewwithanm/python-markdownify/issues/143 Exploit ([email protected])
https://github.com/matthewwithanm/python-markdownify/issues/143 Exploit (134c704f-9b21-4f2e-91b3-4a467353bcc0)