All vulnerabilities
CVE-2026-111895GHSA-6hhv-gc4g-f4r7

phpMyFAQ 3.2.0 before 4.0.0 and 4.0.2 before 4.2.0-beta Account Takeover via Entra ID preferred_username

thorsten phpMyFAQ
Open in ThreatlineRecord JSON
CVSS
7.6High
ExploitationPublic exploit codeCISA's assessment says proof of concept code is public, assessed 19 Oct 2026. Not in the KEV catalogCISA via CVE List
Exploit odds (EPSS)0.29%Chance of exploitation activity in the next 30 days, higher than 20% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in4.0.0Also 4.2.0-betaCVE List
Published17 Oct 2026Updated 19 Oct 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

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.

Text from CVE List

Affected versions 4

  • phpMyFAQaffected: 3.2.0 before 4.0.0CVE List
  • phpMyFAQunaffected: 4.0.0CVE List
  • phpMyFAQaffected: 4.0.2 before 4.2.0-betaCVE List
  • phpMyFAQunaffected: 4.2.0-betaCVE List

References 2