CVE-2026-66399
phpMyFAQ before 4.1.6 Privilege Escalation via Group Membership
- State
- Published
- Severity
- 8.5 High
- Published
- Jul 27, 2026
- Updated
- Aug 18, 2026
- Reserved
- Jul 26, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.5 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 6.5 Medium | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N | VulnCheck |
Weaknesses
- CWE-269 Improper Privilege Management
Affected Products
| Product | Versions |
|---|---|
phpMyFAQthorsten |
|
References
- GitHub Security Advisory (GHSA-28cc-v39j-vr95)vendor-advisory
- VulnCheck Advisory: phpMyFAQ before 4.1.6 Privilege Escalation via Group Membershipthird-party-advisory
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