{"id":"CVE-2026-121413","published":"2026-11-03T15:17:30.510","lastModified":"2026-11-03T18:17:57.647","description":"Parse Server before 8.6.112 and 9.0.0 before 9.10.6-alpha.4 contains an authorization bypass in the session upgrade endpoint, which creates a new session for any valid session token without enforcing the _Session class create class-level permission. Attackers holding a user's session token can send an already revocable token to /upgradeToRevocableSession to obtain additional sessions with fresh expiration that persist after the original session is logged out.","cvssScore":3.1,"cvssSeverity":"LOW","cvssVector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N","cwes":["CWE-863"],"vendors":[],"products":[],"references":[{"url":"https://github.com/parse-community/parse-server/pull/10808","tags":[]},{"url":"https://github.com/parse-community/parse-server/pull/10809","tags":[]},{"url":"https://github.com/parse-community/parse-server/security/advisories/GHSA-2j2x-c587-q33g","tags":[]},{"url":"https://www.vulncheck.com/advisories/parse-server-before-8.6.112-and-9.0.0-before-9.10.6-alpha.4-session-permission-bypass-via-upgradetorevocablesession","tags":[]}],"exploitRefs":[{"url":"https://github.com/parse-community/parse-server/pull/10808","tags":[]},{"url":"https://github.com/parse-community/parse-server/pull/10809","tags":[]},{"url":"https://github.com/parse-community/parse-server/security/advisories/GHSA-2j2x-c587-q33g","tags":[]}],"hasPoc":true,"ai":null}