CVE-2026-66397: Thorsten Phpmyfaq

High severity, CVSS 8.6. EPSS: 0.5% chance of exploitation in the next 30 days.

phpMyFAQ before 4.1.6 fails to validate path traversal sequences in the existing_image field during category updates, allowing authenticated attackers to delete arbitrary files by exploiting insufficient sanitization in Image::delete(). Attackers can delete the database.php configuration file to disable the installation gate and access the public setup wizard to create new superadmin accounts.

Affected products

• Thorsten Phpmyfaq: before 4.1.6 (fixed in 4.1.6)

Published 2026-07-27. Last modified 2026-07-28.