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CVE PROGRAM SOURCE RECORD7.6 High

CVE-2026-39924

Flarum < 1.8.16 Session Persistence via Improper Access Token Revocation

Description

Flarum before 1.8.16 contains an improper session invalidation vulnerability that allows attackers who hold a valid session token to retain full account access after a victim changes their password, because the access_tokens table is never cleared on password change events. The TokensClearer::clearPasswordTokens() function only removes rows from the password_tokens table while leaving all active session cookies and API bearer tokens intact, including long-lived RememberAccessToken entries, and administrator-forced password resets via the user update endpoint are equally ineffective at revoking attacker-held sessions.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Flarum Flarum Framework

Default version status: affected

  • 0 to < 1.8.16affected
pkg:github/flarum/framework

References