The Flexible Wishlist for WooCommerce – Ecommerce Wishlist & Save for later plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.2.26. This is due to missing or incorrect nonce validation on several functions. This makes it possible for unauthenticated attackers to modify/update/create other user's wishlists via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.