Vulnerability Description
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.57 and 9.6.0-alpha.48, an authenticated user can overwrite server-generated session fields such as expiresAt and createdWith when updating their own session via the REST API. This allows bypassing the server's configured session lifetime policy, making a session effectively permanent. This issue has been patched in versions 8.6.57 and 9.6.0-alpha.48.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Parseplatform | Parse-Server | < 8.6.57 |
Related Weaknesses (CWE)
References
- https://github.com/parse-community/parse-server/commit/26b628c8fb3cc79ea95537476Patch
- https://github.com/parse-community/parse-server/commit/ea68fc0b22a6056c967514946Patch
- https://github.com/parse-community/parse-server/pull/10263Issue Tracking
- https://github.com/parse-community/parse-server/pull/10264Issue Tracking
- https://github.com/parse-community/parse-server/security/advisories/GHSA-jc39-68Vendor Advisory
FAQ
What is CVE-2026-33527?
CVE-2026-33527 is a vulnerability with a CVSS score of 4.3 (MEDIUM). Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.57 and 9.6.0-alpha.48, an authenticated user can overwrite server-generate...
How severe is CVE-2026-33527?
CVE-2026-33527 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-33527?
Check the references section above for vendor advisories and patch information. Affected products include: Parseplatform Parse-Server.