CVE-2026-32242 — parse-server
CVE-2026-32242 is a CWE-362 vulnerability in parse-server. A fix is available for parse-server — see the affected versions and patch details below.
Parse Server OAuth2 adapter shares mutable state across providers via singleton instance
Exploitation Status
No confirmed exploitation observed yet
- A successful exploit gives an attacker total control of the affected component, not partial access.
- CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.
Exploitation and automatability from CISA’s SSVC triage for CVE-2026-32242.
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.
Real-World Exposure
How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.
parse-servernpmDescription
Impact
Parse Server's built-in OAuth2 auth adapter exports a singleton instance that is reused directly across all OAuth2 provider configurations. Under concurrent authentication requests for different OAuth2 providers, one provider's token validation may execute using another provider's configuration, potentially allowing a token that should be rejected by one provider to be accepted because it is validated against a different provider's policy.
Deployments that configure multiple OAuth2 providers via the oauth2: true flag are affected.
Patches
The fix ensures that a new adapter instance is created for each provider instead of reusing the singleton, so each provider's configuration is isolated.
Workarounds
There is no known workaround. If only a single OAuth2 provider is configured, the race condition cannot occur.
References
- GitHub security advisory: https://github.com/parse-community/parse-server/security/advisories/GHSA-2cjm-2gwv-m892
- Fix Parse Server 9: https://github.com/parse-community/parse-server/releases/tag/9.6.0-alpha.11
- Fix Parse Server 8: https://github.com/parse-community/parse-server/releases/tag/8.6.37
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | parse-server | ≥ 9.0.0&&< 9.6.0-alpha.11 | 9.6.0-alpha.11npm install parse-server@9.6.0-alpha.11 |
| 📦npm | parse-server | all versions | 8.6.37npm install parse-server@8.6.37 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for parse-server, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update parse-server to 9.6.0-alpha.11 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-32242 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 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like CVE-2026-32242 can be triaged on real exposure rather than presence alone.
Tailored to CVE-2026-32242. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is CVE-2026-32242 in your dependencies?
O3 Security finds CVE-2026-32242 across npm dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.