CVE-2026-66399

Published: Jul 27, 2026Modified: Jul 28, 2026Deferred

8.5

Vector

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XShow less

Source: disclosure@vulncheck.com (Secondary)

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.

Related CWEs

CWE-269

Improper Privilege Management

The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.

References (3)

https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-28cc-v39j-vr95

Source: disclosure@vulncheck.com

https://www.vulncheck.com/advisories/phpmyfaq-before-privilege-escalation-via-group-membership

Source: disclosure@vulncheck.com

https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-28cc-v39j-vr95

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

Timeline

No history available yet.