GHSA-fq77-7p7r-83rj
MEDIUMGHSA-fq77-7p7r-83rj is a medium-severity (CVSS 4.4) CWE-23 vulnerability in next. O3 Security confirms whether GHSA-fq77-7p7r-83rj is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Directory Traversal in Next.js
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.
nextnpmDescription
Impact
- Not affected: Deployments on ZEIT Now v2 (https://zeit.co) are not affected
- Not affected: Deployments using the
serverlesstarget - Not affected: Deployments using
next export - Affected: Users of Next.js below 9.3.2
We recommend everyone to upgrade regardless of whether you can reproduce the issue or not.
Patches
https://github.com/zeit/next.js/releases/tag/v9.3.2
References
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | next | ≥ 0.9.9&&< 9.3.2 | 9.3.2 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for next. 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 next to 9.3.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-fq77-7p7r-83rj 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-fq77-7p7r-83rj 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-fq77-7p7r-83rj. 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-fq77-7p7r-83rj in your dependencies?
O3 detects GHSA-fq77-7p7r-83rj across npm dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.