{"id":"CVE-2026-121413","title":"Parse Server before 8.6.112 and 9.0.0 before 9.10.6-alpha.4 Session Permission Bypass via upgradeToRevocableSession","summary":"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…","severity":"low","cvss":3.1,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N","cvssSource":"cna","cwe":["CWE-863"],"vendor":"parse-community","product":"parse-server","affected":["parse-server >= 9.0.0 < 9.10.6-alpha.4","parse-server < 8.6.112"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-03T17:11:08.314489Z"},"published":"2026-11-03","updated":"2026-11-03","sourceUpdated":"2026-11-03T17:11:44.523Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-121413","references":[{"url":"https://github.com/parse-community/parse-server/security/advisories/GHSA-2j2x-c587-q33g","label":"GitHub Security Advisory (GHSA-2j2x-c587-q33g)"},{"url":"https://github.com/parse-community/parse-server/pull/10808"},{"url":"https://github.com/parse-community/parse-server/pull/10809"},{"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","label":"VulnCheck Advisory: Parse Server before 8.6.112 and 9.0.0 before 9.10.6-alpha.4 Session Permission Bypass via upgradeToRevocableSession"}],"tags":["cve.org"],"epss":0.00312,"epssPercentile":0.24251,"ingestedAt":"2026-11-05T20:33:06.306Z","slug":"CVE-2026-121413","body":"## Overview\n\nParse 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.\n\n## Affected\n\n- `parse-server >= 9.0.0 < 9.10.6-alpha.4`\n- `parse-server < 8.6.112`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":17,"depthScoreParts":{"impact":17.1,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}