GHSA-93vw-8fm5-p2jf is a high-severity (CVSS 7.2) CWE-1321 vulnerability in parse-server. O3 Security confirms whether GHSA-93vw-8fm5-p2jf is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Parse Server is vulnerable to Prototype Pollution via Cloud Code Webhooks
Real-World Exposure
How broadly this vulnerability is actually deployed: weekly install volume shows current usage, a proxy for how much of the ecosystem is exposed.
parse-servernpmDescription
Impact
A compromised Parse Server Cloud Code Webhook target endpoint allows an attacker to use prototype pollution to bypass the Parse Server requestKeywordDenylist option.
Patches
Improved keyword detection.
Workarounds
None.
Collaborators
Mikhail Shcherbakov, Cristian-Alexandru Staicu and Musard Balliu working with Trend Micro Zero Day Initiative
References
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | parse-server | all versions | 4.10.20 |
| 📦npm | parse-server | ≥ 5.0.0&&< 5.3.3 | 5.3.3 |
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 4.10.20 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-93vw-8fm5-p2jf 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-93vw-8fm5-p2jf 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-93vw-8fm5-p2jf. 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-93vw-8fm5-p2jf in your dependencies?
O3 detects GHSA-93vw-8fm5-p2jf across npm dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.