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CVE-2026-66399

phpMyFAQ before 4.1.6 Privilege Escalation via Group Membership

Published: Jul 27, 2026Updated: Jul 28, 2026 Sources: CVE List NVDCWE-269
6.5MEDIUM
NVD MITRE
EPSS Score
0.2%
Top 86.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available
Self-Check
OpenVAS

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:HUI:NS:UC:HI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:HPrivileges Required
High
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:NAvailability
None
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Weaknesses

CWE-269

Affected Products

thorsten
individual-devaka phpmyfaq, thorsten/phpmyfaq
phpMyFAQOn-premWeb App
Web & CMS Plugins

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.
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Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

1 technique
Privilege Escalation
View detailed technique mapping

References

https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-28cc-v39j-vr95
github.com
https://www.vulncheck.com/advisories/phpmyfaq-before-privilege-escalation-via-group-membership
vulncheck.com

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