Instapage Plugin < 3.7.3 - Unauthenticated Server-Side Request Forgery

Description

The Instapage Plugin plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to, and including, 3.7.2. This makes it possible for unauthenticated attackers to make web requests to arbitrary locations originating from the web application which can be used to query and modify information from internal services.