Frontend File Manager <= 23.4 - Authenticated (Subscriber+) Arbitrary File Deletion

The Frontend File Manager Plugin plugin for WordPress is vulnerable to arbitrary file deletion due to insufficient file path validation in all versions up to, and including, 23.4. This makes it possible for authenticated attackers, with Subscriber-level access and above, to delete arbitrary files on the server, which can easily lead to remote code execution when the right file is deleted (such as wp-config.php).

An attacker needs Subscriber access first, so the firewall sees the attempt as traffic from a logged-in account: WordSec's web application firewall inspects request payloads before WordPress loads them. Classes like this one can leave something behind, so the staged malware scanner is the second half: it looks for dropped files and modified code rather than for the request that created them. None of that substitutes for the fix: Frontend File Manager Plugin 23.5 closes this, and updating the plugin is the step that ends it.

• Firewall
• Scanner
• Alerts