CVE-2026-56396

phpMyFAQ before 4.1.4 contains missing authorization vulnerabilities in editUser() and updateUserRights() endpoints that allow authenticated administrators to escalate privileges. Non-SuperAdmin users with edit_user permission can set is_superadmin flag or grant arbitrary rights to escalate to SuperAdmin access.

Score

CVSS 3.1 8.8 High

Status

Deferred - disclosure@vulncheck.com

Published

2026-06-21

Last modified

2026-06-23

Weaknesses

CWE-862

Affected products

• Phpmyfaq (Phpmyfaq)

References

• https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-985r-q3qp-299h
• https://www.vulncheck.com/advisories/phpmyfaq-privilege-escalation-via-missing-authorization-in-edituser-and-updateuser…