The Animation Addons for Elementor WordPress plugin before 2.7.2 does not validate a user-supplied value before using it to build the host of a server-side HTTP request, allowing unauthenticated users to make the site issue requests to internal hosts and read the responses back.
https://wpscan.com/vulnerability/e88e0b71-145c-4edd-9b62-783215b64c67/