GHSA-48wp-p9qv-4j64
Commonmarker vulnerable to to several quadratic complexity bugs that may lead to denial of service
Blast Radius
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Description
Impact
Several quadratic complexity bugs in commonmarker's underlying cmark-gfm library may lead to unbounded resource exhaustion and subsequent denial of service.
The following vulnerabilities were addressed:
For more information, consult the release notes for version 0.23.0.gfm.10 and 0.23.0.gfm.11.
Mitigation
Users are advised to upgrade to commonmarker version 0.23.9.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 💎RubyGems | commonmarker | all versions | 0.23.9 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for commonmarker. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
Update commonmarker to 0.23.9 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-48wp-p9qv-4j64 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 pinpoints whether GHSA-48wp-p9qv-4j64 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.
Tailored to GHSA-48wp-p9qv-4j64. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-48wp-p9qv-4j64 in your dependencies?
O3 detects GHSA-48wp-p9qv-4j64 across RubyGems dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.