CVE-2026-121413

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.

• https://github.com/parse-community/parse-server/pull/10808
• https://github.com/parse-community/parse-server/pull/10809
• https://github.com/parse-community/parse-server/security/advisories/GHSA-2j2x-c587-q33g

• https://github.com/parse-community/parse-server/pull/10808
• https://github.com/parse-community/parse-server/pull/10809
• https://github.com/parse-community/parse-server/security/advisories/GHSA-2j2x-c587-q33g
• 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

• HIGHCVE-2024-22031PoC
• MEDIUMCVE-2025-13050PoC
• UNSCOREDCVE-2025-68392
• HIGHCVE-2026-100105
• MEDIUMCVE-2026-100145
• MEDIUMCVE-2026-100259
• HIGHCVE-2026-100262
• LOWCVE-2026-100270

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