Missing Authorization in phpMyFAQ - CVE-2026-56396
Published: July 14, 2026
Vulnerability identifier: #VU137457
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-56396
CWE-ID: CWE-862
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Thorsten Rinne
Affected software:
phpMyFAQ
phpMyFAQ
Detailed vulnerability description
The vulnerability allows a remote user to escalate privileges.
The vulnerability exists due to improper access control in editUser() and updateUserRights() in the UserController when handling user-supplied userId values for administrative user-management requests. A remote user can send a specially crafted request to escalate privileges.
Exploitation requires an authenticated administrative session with the delegable edit_user permission, and the affected endpoints accept CSRF-protected requests that the user is authorized to make.
How to mitigate CVE-2026-56396
Install security update from vendor's website.