CVEvulnerability
CVE-2026-39923
9.2 CRITICAL
Official page ↗
- Status
- Deferred
- Published
- 2026-08-05
- Last modified
- 2026-10-23
- Assigner
- [email protected]
- CVSS 4.0 ([email protected])
- 9.2 CRITICAL — CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- CVSS 3.1 ([email protected])
- 8.1 HIGH — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-324
Description
Flarum before 1.8.16 contains a password reset token expiry bypass vulnerability that allows unauthenticated attackers to reuse expired password reset tokens by submitting them directly to the reset processing endpoint. The SavePasswordController::handle() method calls PasswordToken::findOrFail() without performing any expiry validation, allowing attackers to bypass the 24-hour token lifetime enforced only during form rendering and change any account's password to gain an authenticated session.
Related
Weakness · CWE (1)
- CWE-324 Use of a Key Past its Expiration Date weakness
References
- https://github.com/flarum/framework/commit/2803058d0f9dc38252326070b46d4484fe5a857d github.com
- https://github.com/flarum/framework/pull/4545 github.com
- https://github.com/flarum/framework/releases/tag/v1.8.16 github.com
- https://www.vulncheck.com/advisories/flarum-password-reset-token-expiry-bypass-via-post-reset www.vulncheck.com