GHSA-xwg4-93c6-3h42
GHSA-xwg4-93c6-3h42 is a Path Traversal vulnerability in send. 1 public exploit reference exists, so weaponization risk is real. O3 Security confirms whether GHSA-xwg4-93c6-3h42 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Directory Traversal in send
Blast Radius
Weekly download volume for affected packages — a proxy for how broadly this vulnerability is deployed.
sendnpmDescription
Versions 0.8.3 and earlier of send are affected by a directory traversal vulnerability. When relying on the root option to restrict file access it may be possible for an application consumer to escape out of the restricted directory and access files in a similarly named directory.
For example, static(_dirname + '/public') would allow access to _dirname + '/public-restricted'.
Recommendation
Update to version 0.8.4 or later.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | send | all versions | 0.8.4 |
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 send. 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 send to 0.8.4 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-xwg4-93c6-3h42 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-xwg4-93c6-3h42 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-xwg4-93c6-3h42. 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-xwg4-93c6-3h42 in your dependencies?
O3 detects GHSA-xwg4-93c6-3h42 across npm dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.