CVE-2023-24824

MEDIUM

cmark-gfm < 0.29.0.gfm.10 - Denial of Service via Quadratic Complexity in Blockquote or List Parsing

Title source: llm
STIX 2.1

Description

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.

References (2)

Core 2

Scores

CVSS v3 5.3
EPSS 0.0103
EPSS Percentile 59.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact partial

Details

CWE
CWE-407 CWE-400
Status published
Products (1)
github/cmark-gfm < 0.29.0.gfm.10.
Published Mar 31, 2023
Tracked Since Feb 18, 2026