CVE-2023-24824

cmark-gfm is GitHub's fork of cmark, a CommonMark parsing and rendering library and program in C. A polynomial time complexity issue in cmark-gfm may lead to unbounded resource exhaustion and subsequent denial of service. This CVE covers quadratic complexity issues when parsing text which leads with either large numbers of `>` or `-` characters. This issue has been addressed in version 0.29.0.gfm.10. Users are advised to upgrade. Users unable to upgrade should validate that their input comes from trusted sources.

• CWE-400
• CWE-407

• https://github.com/github/cmark-gfm/commit/2300c1bd2c8226108885bf019655c4159cf26b59Patch
• https://github.com/github/cmark-gfm/security/advisories/GHSA-66g8-4hjf-77xhExploit, Vendor Advisory
• https://github.com/github/cmark-gfm/commit/2300c1bd2c8226108885bf019655c4159cf26b59Patch
• https://github.com/github/cmark-gfm/security/advisories/GHSA-66g8-4hjf-77xhExploit, Vendor Advisory

Published

Mar 31, 2023

Last Modified

Jun 17, 2026

Status

Modified

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