CVE-2025-46656
markdownify allows large headline prefixes such as <h9999999>, which causes memory consumption
2.9
LOW
CVSS 3.1
EPSS 0.06%
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.
How to fix CVE-2025-46656
To remediate CVE-2025-46656, upgrade the affected package to a fixed version below.
- PyPI/markdownify—upgrade to 0.14.1 or later
Is CVE-2025-46656 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 0.14.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | LOW2.9 | CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L |