CVE-2026-66399: Improper Privilege Management in thorsten phpMyFAQ
phpMyFAQ before 4.1.6 contains a privilege escalation vulnerability in GroupController::updateMembers() that allows administrators with only group-management permissions to join privileged groups without verification of required rights. Attackers can add themselves to pre-existing groups holding user-management rights and immediately inherit those permissions to modify or delete user accounts.
CVE-2026-66399: Improper Privilege Management in thorsten phpMyFAQ
Description
phpMyFAQ before 4.1.6 contains a privilege escalation vulnerability in GroupController::updateMembers() that allows administrators with only group-management permissions to join privileged groups without verification of required rights. Attackers can add themselves to pre-existing groups holding user-management rights and immediately inherit those permissions to modify or delete user accounts.
CVSS v4.0
Score 8.5high
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-07-26T12:22:34.139Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a6786039c2644c7f861a52b
Added to database: 07/27/2026, 16:23:31 UTC
Last updated: 07/27/2026, 16:23:31 UTC
Views: 1
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