WebinarPress <= 1.33.27 is vulnerable to Server Side Request Forgery (SSRF) Vulnerability

The WordPress Webinar Plugin – WebinarPress plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to, and including, 1.33.27. This makes it possible for authenticated attackers, with Administrator-level access and above, to make web requests to arbitrary locations originating from the web application which can be used to query and modify information from internal services.