medium4.3
CVE-2026-33527
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js.
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | parse-server | >= 9.0.0, < 9.6.0-alpha.48 | 9.6.0-alpha.48 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Parseplatform | Parse-Server | before 8.6.57 from 9.0.0 before 9.6.0 Version 9.6.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-jc39-686j-wp6q
- https://github.com/parse-community/parse-server/security/advisories/GHSA-jc39-686j-wp6q
- https://github.com/parse-community/parse-server/pull/10263
- https://github.com/parse-community/parse-server/pull/10264
- https://nvd.nist.gov/vuln/detail/CVE-2026-33527
- https://github.com/parse-community/parse-server/commit/26b628c8fb3cc79ea955374769eebcff6f8a8a73
- https://github.com/parse-community/parse-server/commit/ea68fc0b22a6056c9675149469ff57817f7cf984