CVE-2023-22483

HighCVSS 7.5/10Last modified Jun 17, 2026

Description

cmark-gfm is GitHub's fork of cmark, a CommonMark parsing and rendering library and program in C. Versions prior to 0.29.0.gfm.7 are subject to several polynomial time complexity issues in cmark-gfm that may lead to unbounded resource exhaustion and subsequent denial of service. Various commands, when piped to cmark-gfm with large values, cause the running time to increase quadratically. These vulnerabilities have been patched in version 0.29.0.gfm.7.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-400 CWE-407

Affected software

Vendor	Product	Versions
github	cmark-gfm	< 0.29.0.gfm.7

References

https://github.com/github/cmark-gfm/security/advisories/GHSA-29g3-96g3-jg6cExploit, Third Party Advisory
https://github.com/github/cmark-gfm/security/advisories/GHSA-29g3-96g3-jg6cExploit, Third Party Advisory

Timeline

Published: Jan 23, 2023
Last modified: Jun 17, 2026
NVD status: Modified

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