What’s Vulnerable › Vulnerabilities

CVE-2026-111895: phpMyFAQ 3.2.0 before 4.0.0 and 4.0.2 before 4.2.0-beta Account Takeover via Entra ID preferred_username

• Severity: medium (CVSS 6.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-17 · updated 2026-10-19
• Weakness: CWE-287

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.

Affected products

• thorsten phpMyFAQ: from 3.2.0 before 4.0.0; from 4.0.2 before 4.2.0-beta — fixed in 4.0.0, 4.2.0-beta

How to fix

Upgrade to a fixed version: thorsten phpMyFAQ 4.0.0, 4.2.0-beta. Check the vendor advisory for mitigations.

References

• https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-6hhv-gc4g-f4r7
• https://www.vulncheck.com/advisories/phpmyfaq-3.2.0-before-4.0.0-and-4.0.2-before-4.2.0-beta-account-takeover-via-entra-id-preferred-username
• https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-6hhv-gc4g-f4r7

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