GHSA-ffmh-x56j-9rc3 is a high-severity (CVSS 7.5) CWE-1333 vulnerability in jquery-validation. O3 Security confirms whether GHSA-ffmh-x56j-9rc3 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
jquery-validation Regular Expression Denial of Service due to arbitrary input to url2 method
Real-World Exposure
How broadly this vulnerability is actually deployed: weekly install volume shows current usage, a proxy for how much of the ecosystem is exposed.
jquery-validationnpmDescription
Summary
Incomplete fix of CVE-2021-43306: An exponential ReDoS (Regular Expression Denial of Service) can be triggered in the jquery-validation npm package, when an attacker is able to supply arbitrary input to the url2 method.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | jquery-validation | all versions | 1.19.5 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for jquery-validation. 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 jquery-validation to 1.19.5 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-ffmh-x56j-9rc3 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-ffmh-x56j-9rc3 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-ffmh-x56j-9rc3. 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-ffmh-x56j-9rc3 in your dependencies?
O3 detects GHSA-ffmh-x56j-9rc3 across npm dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.