GHSA-837q-jhwx-cmpv
MEDIUMParse Server has an OAuth login vulnerability
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
The 3rd party authentication handling of Parse Server allows the authentication credentials of some specific authentication providers to be used across multiple Parse Server apps. For example, if a user signed up using the same authentication provider in two unrelated Parse Server apps, the credentials stored by one app can be used to authenticate the same user in the other app. Note that this only affects Parse Server apps that specifically use an affected 3rd party authentication provider for user authentication, for example by setting the Parse Server option auth to configure a Parse Server authentication adapter. See the 3rd party authentication docs for more information on which authentication providers are affected.
Patches
The fix of this vulnerability requires to upgrade Parse Server to a version that includes the bug fix, as well as upgrade the client app to send a secure payload, which is different from the previous insecure payload. To accommodate a gradual rollout of the client app update, affected Parse Server authentication adapters now offer an enableInsecureAuth option to accept both insecure and secure payloads from clients apps. See the 3rd party authentication docs for how to migrate from insecure to secure authentication.
Workarounds
None.
References
- GitHub security advisory: https://github.com/parse-community/parse-server/security/advisories/GHSA-837q-jhwx-cmpv
- Parse Server documentation for 3rd party authentication providers: https://docs.parseplatform.org/parse-server/guide/#oauth-and-3rd-party-authentication
- Bug fix in Parse Server 7: https://github.com/parse-community/parse-server/pull/9668
- Bug fix in Parse Server 8: https://github.com/parse-community/parse-server/pull/9667
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | parse-server | all versions | 7.5.2 |
| 📦npm | parse-server | ≥ 8.0.0&&< 8.0.2 | 8.0.2 |
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 7.5.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-837q-jhwx-cmpv 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-837q-jhwx-cmpv 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-837q-jhwx-cmpv. 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-837q-jhwx-cmpv in your dependencies?
O3 detects GHSA-837q-jhwx-cmpv across npm dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.