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
- —
- Fix status
- Fixed
No CVSS vector from any source. Fix status from GitHub. Impact type from CWE-407.
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-2023-37463](https://github.com/github/cmark-gfm/security/advisories/GHSA-w4qg-3vf7-m9x5) For more information, consult the release notes for version [`0.29.0.gfm.12`](https://github.com/github/cmark-gfm/releases/tag/0.29.0.gfm.12). ## Mitigation Users are advised to upgrade to commonmarker version [`0.23.10`](https://rubygems.org/gems/commonmarker/versions/0.23.10).
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 0.23.10 | 0.23.10 | Patch available | GHSA-7vh7-fw88-wj87 |
- commonmarker (RubyGems) Vendor— Affected before 0.23.10 Fixed in 0.23.10 Patch available GHSA-7vh7-fw88-wj87
Remediation
- Fix · GHSA-7vh7-fw88-wj87 commonmarker (RubyGems) Fixed in 0.23.10 Advisory →
Timeline
- 2026-10-03 Threatist record created from GHSA-7vh7-fw88-wj87
References
Other 5
- https://github.com/gjtorikian/commonmarker/security/advisories/GHSA-7vh7-fw88-wj87
- https://github.com/gjtorikian/commonmarker/commit/db8cd377b54541f7fd484d168b7682a282a680f7
- https://github.com/github/cmark-gfm/releases/tag/0.29.0.gfm.12
- https://github.com/gjtorikian/commonmarker
- https://rubygems.org/gems/commonmarker/versions/0.23.10
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences