GHSA-462x-c3jw-7vr6
CRITICALParse Server vulnerable to remote code execution via MongoDB BSON parser through prototype pollution
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
Blast Radius
Weekly download volume for affected packages — a proxy for how broadly this vulnerability is deployed.
parse-servernpmDescription
Impact
An attacker can use this prototype pollution sink to trigger a remote code execution through the MongoDB BSON parser.
Patches
Prevent prototype pollution in MongoDB database adapter.
Workarounds
Disable remote code execution through the MongoDB BSON parser.
Credits
- Discovered by hir0ot working with Trend Micro Zero Day Initiative
- Fixed by dbythy
- Reviewed by mtrezza
References
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | parse-server | all versions | 5.5.2 |
| 📦npm | parse-server | ≥ 6.0.0&&< 6.2.1 | 6.2.1 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for parse-server. 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 parse-server to 5.5.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-462x-c3jw-7vr6 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-462x-c3jw-7vr6 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-462x-c3jw-7vr6. 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-462x-c3jw-7vr6 in your dependencies?
O3 detects GHSA-462x-c3jw-7vr6 across npm dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.