CVE-2026-85590: thorsten phpMyFAQ, заобикаляне на вход и права

Описание

Оригинално описание

phpMyFAQ before 4.1.8 contains an authentication bypass vulnerability in its two-factor authentication (TOTP) disable functionality. The removeTwofactorConfig() handler (reachable via POST /api/user/remove-twofactor) verifies only that the user is logged in and that a valid CSRF token is supplied, then disables TOTP without requiring password re-entry or a current TOTP code. The same downgrade is also reachable inline via PUT /api/user/data/update, which accepts a plain twofactor_enabled form field under the same session+CSRF-only guard. An attacker who has hijacked a user's session can silently strip two-factor protection from any account, including administrator accounts, after which password-only authentication succeeds.

Засегнати продукти

• thorsten phpMyFAQ: преди 4.1.8; 4.1.8

Вид слабост

• CWE-308 Използване на еднофакторна автентикация

История

Други уязвимости в thorsten phpMyFAQ

• 8.7CVE-2026-116183
• 5.3CVE-2026-116182
• 7.1CVE-2026-111910
• 9.8CVE-2026-111911
• 8.1CVE-2026-111909

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-85590
• https://nvd.nist.gov/vuln/detail/CVE-2026-85590
• https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-h96g-59xp-7r5m
• https://www.vulncheck.com/advisories/phpmyfaq-before-4.1.8-authentication-bypass-via-two-factor-disable