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BIT-parse-2026-33527 — Parse Server: Session update endpoint allows overwriting server-generated session fields

Affected: Bitnami: parse

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, 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

EUVD-2026-277294

fkie_cve-2026-33527

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.

GHSA-jc39-686j-wp6q — Parse Server's Session Update endpoint allows overwriting server-generated session fields

Affected: npm: parse-server

### Impact

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.

### Patches

The fix blocks authenticated users from setting `expiresAt` and `createdWith` fields when updating a session. Master key and maintenance key operations are not affected.

### Workarounds

There is no known workaround other than upgrading.

### Resources

- GitHub security advisory: https://github.com/parse-community/parse-server/security/advisories/GHSA-jc39-686j-wp6q - Fix Parse Server 9: https://github.com/parse-community/parse-server/pull/10263 - Fix Parse Server 8: https://github.com/parse-community/parse-server/pull/10264