Featured Image from Content (featured-image-from-content) WordPress plugin versions prior to 1.7 contain an authenticated server-side request forgery vulnerability that allows Author-level users to fetch internal HTTP resources. Attackers can exploit insecure URL fetching and file write operations to retrieve sensitive internal data and store it in web-accessible upload directories.
Weakness
The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.