Export and Import Users and Customers <= 2.6.2 - Authenticated (Administrator+) Server-Side Request Forgery via validate_file Function

The Export and Import Users and Customers plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to, and including, 2.6.2 via the validate_file() function. 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 and can be used to query and modify information from internal services.