GHSA-662x-fhqg-9p8v
HIGHGHSA-662x-fhqg-9p8v is a high-severity (CVSS 7.5) Uncontrolled Resource Consumption vulnerability in ua-parser-js. 3 public exploit references exist, so weaponization risk is real. O3 Security confirms whether GHSA-662x-fhqg-9p8v is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Regular Expression Denial of Service in ua-parser-js
Blast Radius
Weekly download volume for affected packages — a proxy for how broadly this vulnerability is deployed.
ua-parser-jsnpmDescription
The package ua-parser-js before 0.7.22 are vulnerable to Regular Expression Denial of Service (ReDoS) via the regex for Redmi Phones and Mi Pad Tablets UA.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | ua-parser-js | all versions | 0.7.22 |
Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for ua-parser-js. 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 ua-parser-js to 0.7.22 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-662x-fhqg-9p8v 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-662x-fhqg-9p8v 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-662x-fhqg-9p8v. 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-662x-fhqg-9p8v in your dependencies?
O3 detects GHSA-662x-fhqg-9p8v across npm dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.