Several quadratic complexity bugs may lead to denial of service in Commonmarker
Key facts
- Attack vector
- —
- Privileges required
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- User interaction
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- Attack complexity
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- Impact type
- Denial of service
- Confidentiality · integrity · availability
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- Fix status
- Fixed
No CVSS vector from any source. Fix status from GitHub. Impact type from CWE-400.
Summary
## Impact Several quadratic complexity bugs in commonmarker's underlying [`cmark-gfm`](https://github.com/github/cmark-gfm) library may lead to unbounded resource exhaustion and subsequent denial of service. The following vulnerabilities were addressed: * [CVE-2023-22483](https://github.com/github/cmark-gfm/security/advisories/GHSA-29g3-96g3-jg6c) * [CVE-2023-22484](https://github.com/github/cmark-gfm/security/advisories/GHSA-24f7-9frr-5h2r) * [CVE-2023-22485](https://github.com/github/cmark-gfm/security/advisories/GHSA-c944-cv5f-hpvr) * [CVE-2023-22486](https://github.com/github/cmark-gfm/security/advisories/GHSA-r572-jvj2-3m8p) For more information, consult the release notes for version [`0.23.0.gfm.7`](https://github.com/github/cmark-gfm/releases/tag/0.29.0.gfm.7). ## Mitigation Users are advised to upgrade to commonmarker version [`0.23.7`](https://rubygems.org/gems/commonmarker/versions/0.23.7).
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | commonmarker (RubyGems) | before 0.23.7 | 0.23.7 | Patch available | GHSA-636f-xm5j-pj9m |
- commonmarker (RubyGems) Vendor— Affected before 0.23.7 Fixed in 0.23.7 Patch available GHSA-636f-xm5j-pj9m
Remediation
- Fix · GHSA-636f-xm5j-pj9m commonmarker (RubyGems) Fixed in 0.23.7 Advisory →
Timeline
- 2026-10-03 Threatist record created from GHSA-636f-xm5j-pj9m
References
Sources
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