CVE-2026-66397

Description

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.

References

• https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-mh9w-5hr8-3272
• https://www.vulncheck.com/advisories/phpmyfaq-before-path-traversal-via-category-image-deletion
• https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-mh9w-5hr8-3272