VULNERABILITY INTELLIGENCE

CVE-2023-22485

CVSS score5.3 MEDIUM
EPSS probability0.72%
CISA KEVNot currently listed
Published2023-01-24
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Description

cmark-gfm is GitHub's fork of cmark, a CommonMark parsing and rendering library and program in C. In versions prior 0.29.0.gfm.7, a crafted markdown document can trigger an out-of-bounds read in the `validate_protocol` function. We believe this bug is harmless in practice, because the out-of-bounds read accesses `malloc` metadata without causing any visible damage.This vulnerability has been patched in 0.29.0.gfm.7.

Weakness classification

  • security-advisories@github.com: CWE-125
  • nvd@nist.gov: CWE-91

Primary references