CVE-2025-46656

Description

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 Reserved 2025-04-26 | Published 2025-04-26 | Updated 2025-04-29 | Assigner mitre

Problem types

CWE-1284 Improper Validation of Specified Quantity in Input

Product status

References

github.com/matthewwithanm/python-markdownify/issues/143 exploit

github.com/...anm/python-markdownify/compare/0.14.0...0.14.1

github.com/matthewwithanm/python-markdownify/issues/143

cve.org (CVE-2025-46656)

nvd.nist.gov (CVE-2025-46656)

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