HIGH

CVE-2026-39923

2026-08-05 CVSS v3.1

CVSS

8.1

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.

Weakness (CWE)

CWE-324

EPSS Score

0.26%

Probability of exploitation in next 30 days

18.1th percentile

References

https://github.com/flarum/framework/commit/2803058d0f9dc38252326070b46d4484fe5a857d https://github.com/flarum/framework/pull/4545 https://github.com/flarum/framework/releases/tag/v1.8.16 https://www.vulncheck.com/advisories/flarum-password-reset-token-expiry-bypass-via-post-reset

View on dbcve.org

Base CVE data derived from NVD (public domain). Enrichment by dbcve.org (CC-BY-4.0). Fetched via API.

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