The WooCommerce Wishlist (High customization, fast setup,Free Elementor Wishlist, most features) plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 1.8.7 via the download_pdf_file() function due to missing validation on a user controlled key. This makes it possible for unauthenticated attackers to extract data from wishlists that they should not have access to.
The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action.
The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.