{"id":"CVE-2026-33527","aliases":["BIT-parse-2026-33527","GHSA-jc39-686j-wp6q"],"url":"https://o3.security/vulnerability/CVE-2026-33527","summary":"Parse Server: Session update endpoint allows overwriting server-generated session fields","details":"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.","published":"2026-03-24T18:22:44.613Z","modified":"2026-08-07T11:50:53.838677144Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"parse-server","fixedVersion":"9.6.0-alpha.48"},{"ecosystem":"npm","name":"parse-server","fixedVersion":"8.6.57"}],"fix":{"url":"https://github.com/parse-community/parse-server/commit/26b628c8fb3cc79ea955374769eebcff6f8a8a73","label":"parse-community/parse-server@26b628c"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33527.json"},{"type":"ADVISORY","url":"https://github.com/parse-community/parse-server/security/advisories/GHSA-jc39-686j-wp6q"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-33527"},{"type":"FIX","url":"https://github.com/parse-community/parse-server/commit/26b628c8fb3cc79ea955374769eebcff6f8a8a73"},{"type":"FIX","url":"https://github.com/parse-community/parse-server/commit/ea68fc0b22a6056c9675149469ff57817f7cf984"},{"type":"FIX","url":"https://github.com/parse-community/parse-server/pull/10263"},{"type":"FIX","url":"https://github.com/parse-community/parse-server/pull/10264"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T11:50:53.838677144Z"}}