Vulnerability Description
Mistune before 3.3.0 contains a path traversal vulnerability in the opt-in Include directive that allows attackers to read local files by supplying relative or absolute include paths. Attackers who submit Markdown rendered via Markdown.read() can disclose files such as /etc/passwd and inject unescaped HTML or script content into rendered output.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/lepture/mistune/security/advisories/GHSA-jhcm-5rpf-j3wv
- https://www.vulncheck.com/advisories/mistune-before-3.3.0-arbitrary-local-file-r
- https://github.com/lepture/mistune/security/advisories/GHSA-jhcm-5rpf-j3wv
FAQ
What is CVE-2026-115354?
CVE-2026-115354 is a vulnerability with a CVSS score of 6.5 (MEDIUM). Mistune before 3.3.0 contains a path traversal vulnerability in the opt-in Include directive that allows attackers to read local files by supplying relative or absolute include paths. Attackers who su...
How severe is CVE-2026-115354?
CVE-2026-115354 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-115354?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.