GHSA-r5xw-q988-826m
MEDIUMRemote Memory Exposure in mongoose
Blast Radius
Weekly download volume for affected packages — a proxy for how broadly this vulnerability is deployed.
mongoosenpmDescription
Versions of mongoose before 4.3.6, 3.8.39 are vulnerable to remote memory exposure.
Trying to save a number to a field of type Buffer on the affected mongoose versions allocates a chunk of uninitialized memory and stores it in the database.
Recommendation
Update to version 4.3.6, 3.8.39 or later.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | mongoose | ≥ 3.5.5&&< 3.8.39 | 3.8.39 |
| 📦npm | mongoose | ≥ 4.0.0&&< 4.3.6 | 4.3.6 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for mongoose. 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 mongoose to 3.8.39 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-r5xw-q988-826m 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-r5xw-q988-826m 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-r5xw-q988-826m. 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-r5xw-q988-826m in your dependencies?
O3 detects GHSA-r5xw-q988-826m across npm dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.