GHSA-x9p2-fxq6-2m5f is a medium-severity (CVSS 4.3) vulnerability in swagger-ui. O3 Security confirms whether GHSA-x9p2-fxq6-2m5f is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Reverse Tabnapping in swagger-ui
Real-World Exposure
How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.
swagger-uinpmDescription
Versions of swagger-ui prior to 3.18.0 are vulnerable to Reverse Tabnapping. The package uses target='_blank' in anchor tags, allowing attackers to access window.opener for the original page. This is commonly used for phishing attacks.
Recommendation
Upgrade to version 3.18.0 or later.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | swagger-ui | all versions | 3.18.0 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for swagger-ui. 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 swagger-ui to 3.18.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-x9p2-fxq6-2m5f 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-x9p2-fxq6-2m5f 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-x9p2-fxq6-2m5f. 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-x9p2-fxq6-2m5f in your dependencies?
O3 detects GHSA-x9p2-fxq6-2m5f across npm dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.