CVE-2023-22486

LOW

cmark-gfm < 0.29.0.gfm.7 - Denial of Service via Polynomial Time Complexity in handle_close_bracket

Title source: llm

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 contain a polynomial time complexity issue in handle_close_bracket that may lead to unbounded resource exhaustion and subsequent denial of service. This vulnerability has been patched in 0.29.0.gfm.7.

References (1)

Core 1

Core References

Exploit, Third Party Advisory x_refsource_confirm

https://github.com/github/cmark-gfm/security/advisories/GHSA-r572-jvj2-3m8p

Scores

CVSS v3 3.5

EPSS 0.0111

EPSS Percentile 61.5%

Attack Vector ADJACENT_NETWORK

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

CISA SSVC

Vulnrichment

Exploitation poc

Automatable no

Technical Impact partial

Details

CWE

CWE-407 CWE-400

Status published

Products (1)

github/cmark-gfm < 0.29.0.gfm.7

Published Jan 26, 2023

Tracked Since Feb 18, 2026