The SureForms – Drag and Drop Form Builder for WordPress plugin for WordPress is vulnerable to arbitrary file deletion due to insufficient file path validation in the delete_entry_files() function in all versions up to, and including, 1.7.3. This makes it possible for unauthenticated attackers 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).
The product allows user input to control or influence paths or file names that are used in filesystem operations.
The product uses an externally controlled name or reference that resolves to a resource that is outside of the intended control sphere.