Sahraoui Aymen

The Everest Forms – Contact Form, Payment Form, Quiz, Survey & Custom Form Builder with AI plugin for WordPress is vulnerable to file deletion due to insufficient file path validation in the remove csv file after email send function in all versions up to, and including, 3.6.2 This makes it possible for unauthenticated attackers to delete files within the wp-content/uploads directory on the server, which can lead to loss of uploaded content. On hardened Apache configurations, deletion of uploads/.htaccess can re-enable PHP execution inside the uploads directory. This attack is only possible when the Save-and-Continue addon is active (EVF SAVE AND CONTINUE VERSION is defined) and the 'Disable storing entry information' setting is enabled on the target form. Escaping the uploads directory and deleting files in the site root can be possible under rare circumstances.

An arbitrary directory copy issue exists via the `handle restore step()` function. The problem stems from missing HTTP access controls on the `wp-content/uploads/demi-backup-state/` directory, which exposes the cryptographic restore key. This key is used to authenticate the unauthenticated AJAX handler and forge signed restore-state envelopes. Consequently, unauthenticated attackers can copy arbitrary files to destinations they control on the server. This exploitation requires an active restore operation to have been initiated, as this process writes the `.restore key` and `.restore step token` files to the public upload directory, allowing the secrets to be harvested.