GHSA-f6vf-pq8c-69m4
CRITICALGHSA-f6vf-pq8c-69m4 is a critical-severity (CVSS 9.8) CWE-755 vulnerability in com.nimbusds:nimbus-jose-jwt. 2 public exploit references exist, so weaponization risk is real. O3 Security confirms whether GHSA-f6vf-pq8c-69m4 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Improper Check for Unusual or Exceptional Conditions in Connect2id Nimbus JOSE+JWT
Blast Radius
com.nimbusds:nimbus-jose-jwtReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.
Description
Connect2id Nimbus JOSE+JWT before v7.9 can throw various uncaught exceptions while parsing a JWT, which could result in an application crash (potential information disclosure) or a potential authentication bypass.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | com.nimbusds:nimbus-jose-jwt | all versions | 7.9 |
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 com.nimbusds:nimbus-jose-jwt. 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 com.nimbusds:nimbus-jose-jwt to 7.9 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-f6vf-pq8c-69m4 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-f6vf-pq8c-69m4 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-f6vf-pq8c-69m4. 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-f6vf-pq8c-69m4 in your dependencies?
O3 detects GHSA-f6vf-pq8c-69m4 across Maven dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.