CVE-2023-37463

7.5 highEPSS 0.7%

High (7.5) in github cmark-gfm. EPSS 0.7% chance of exploitation in the next 30 days.

cmark-gfm is an extended version of the C reference implementation of CommonMark, a rationalized version of Markdown syntax with a spec. Three polynomial time complexity issues in cmark-gfm may lead to unbounded resource exhaustion and subsequent denial of service. These vulnerabilities have been patched in 0.29.0.gfm.12.

Severity

CVSS 3.1

7.5 high

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

EPSS: 0.7% chance of exploitation in the next 30 days; higher than 53% of CVEs (scores of 2026-10-31)
CWE: CWE-400
Published: 2023-07-13
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

github:cmark-gfm

References

https://github.com/github/cmark-gfm/releases/tag/0.29.0.gfm.12
https://github.com/github/cmark-gfm/security/advisories/GHSA-w4qg-3vf7-m9x5
https://github.com/github/cmark-gfm/releases/tag/0.29.0.gfm.12
https://github.com/github/cmark-gfm/security/advisories/GHSA-w4qg-3vf7-m9x5

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