WPeMatico RSS Feed Fetcher < 2.8.12 - Authenticated (Subscriber+) Server-Side Request Forgery via wpematico_test_feed

Description

The WPeMatico RSS Feed Fetcher plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to, and including, 2.8.11 via the wpematico_test_feed() function. This makes it possible for authenticated attackers, with Subscriber-level access and above, to make web requests to arbitrary locations originating from the web application and can be used to query and modify information from internal services.