GHSA-4jpv-8r57-pv7j
MEDIUMGHSA-4jpv-8r57-pv7j is a medium-severity (CVSS 5.3) Information Exposure vulnerability in @nestjs/core. 1 public exploit reference exists, so weaponization risk is real. O3 Security confirms whether GHSA-4jpv-8r57-pv7j is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
@nestjs/core vulnerable to Information Exposure via StreamableFile pipe
Blast Radius
Weekly download volume for affected packages — a proxy for how broadly this vulnerability is deployed.
@nestjs/corenpmDescription
Versions of the package @nestjs/core before 9.0.5 are vulnerable to Information Exposure via the StreamableFile pipe. Exploiting this vulnerability is possible when the client cancels a request while it is streaming a StreamableFile, the stream wrapped by the StreamableFile will be kept open.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | @nestjs/core | all versions | 9.0.5 |
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 @nestjs/core. 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 @nestjs/core to 9.0.5 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-4jpv-8r57-pv7j 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-4jpv-8r57-pv7j 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-4jpv-8r57-pv7j. 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-4jpv-8r57-pv7j in your dependencies?
O3 detects GHSA-4jpv-8r57-pv7j across npm dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.