CVE-2023-0291: Expresstech Quiz And Survey Master

Critical severity, CVSS 9.1. EPSS: 2% chance of exploitation in the next 30 days.

The Quiz And Survey Master for WordPress is vulnerable to authorization bypass due to a missing capability check on the function associated with the qsm_remove_file_fd_question AJAX action in versions up to, and including, 8.0.8. This makes it possible for unauthenticated attackers to delete arbitrary media files.

Affected products

• Expresstech Quiz And Survey Master: up to and including 8.0.8

Published 2023-06-09. Last modified 2026-06-17.