The HTML5 Audio Player – The Ultimate No-Code Podcast, MP3 & Audio Player plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions from 2.4.0 up to, and including, 2.5.1 via the getIcyMetadata() function. This makes it possible for unauthenticated attackers to make web requests to arbitrary locations originating from the web application and can be used to query and modify information from internal services.
CWE-918