CVE-2026-111895

Medium

Description

phpMyFAQ 3.2.0 before 4.0.0 and 4.0.2 before 4.2.0-beta contains an authentication bypass in its Microsoft Entra ID login flow, which links users by the mutable preferred_username claim and whose AuthEntraId::create() ignores the duplicate-login exception while continuing with the existing local account. Attackers controlling an Entra identity in the configured tenant with a matching preferred_username can take over that local account, including super-admin accounts.

SeverityMedium

CVSS6.8

Exploit probability—

ProductphpMyFAQ

PublishedOct 17, 2026

First seenOct 17, 2026

Weakness typeCWE-287Improper authentication

How to fix

Update

thorsten phpMyFAQ4.0.0, 4.2.0-beta or later

Vendor advisories

github.com/thorsten/phpMyFAQ/security/advisories/GHSA-6hhv-gc4g-f4r7

Affected products

Product	Affected versions	Fixed in
thorsten phpMyFAQ	3.2.0 ≤ v < 4.0.0, 4.0.2 ≤ v < 4.2.0-beta	4.0.0, 4.2.0-beta

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