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.
CVSS Details
- CVSS 3.1 Base Score: 5.3
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade pandocUpgrade pandoc-common | Jul 4, 2025 | Mar 31, 2023 |
| Debian | — | Upgrade ruby-commonmarkerUpgrade cmark-gfmNo solution existsUpgrade r-cran-commonmarkUpgrade python-cmarkgfm | May 15, 2025 | Mar 31, 2023 |
| Redhat_linux | — | Upgrade pandocUpgrade pandoc-common | Jun 5, 2025 | Mar 31, 2023 |
| Rocky_linux | — | Upgrade pandoc | Jul 31, 2025 | Jul 29, 2025 |
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