GHSA-2pr6-76vf-7546
MEDIUMGHSA-2pr6-76vf-7546 is a medium-severity (CVSS 5.9) vulnerability in js-yaml. O3 Security confirms whether GHSA-2pr6-76vf-7546 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Denial of Service in js-yaml
Blast Radius
Weekly download volume for affected packages — a proxy for how broadly this vulnerability is deployed.
js-yamlnpmDescription
Versions of js-yaml prior to 3.13.0 are vulnerable to Denial of Service. By parsing a carefully-crafted YAML file, the node process stalls and may exhaust system resources leading to a Denial of Service.
Recommendation
Upgrade to version 3.13.0.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | js-yaml | all versions | 3.13.0 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for js-yaml. 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 js-yaml to 3.13.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-2pr6-76vf-7546 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-2pr6-76vf-7546 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-2pr6-76vf-7546. 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-2pr6-76vf-7546 in your dependencies?
O3 detects GHSA-2pr6-76vf-7546 across npm dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.