CVE-2026-39923
- Source
- https://cve.org/CVERecord?id=CVE-2026-39923
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-39923.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-39923
- Published
- 2026-08-05T14:38:35Z
- Modified
- 2026-09-11T03:30:35Z
- Severity
-
- 9.2 (Critical) CVSS_V4 - 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 CVSS Calculator
- Summary
- Flarum < 1.8.16 Password Reset Token Expiry Bypass via POST /reset
- Details
-
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.
- Database specific
{ "cna_assigner": "VulnCheck", "cwe_ids": [ "CWE-324" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/39xxx/CVE-2026-39923.json" }- References
-
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/39xxx/CVE-2026-39923.json
- https://github.com/flarum/framework/releases/tag/v1.8.16
- https://nvd.nist.gov/vuln/detail/CVE-2026-39923
- https://www.vulncheck.com/advisories/flarum-password-reset-token-expiry-bypass-via-post-reset
- https://github.com/flarum/framework/pull/4545
- https://github.com/flarum/framework/commit/2803058d0f9dc38252326070b46d4484fe5a857d
- https://github.com/flarum/framework