Gravity Forms WebHooks <= 1.6.0 - Authenticated (Admin+) Server-Side Request Forgery via Webhook

The Gravity Forms WebHooks plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to, and including, 1.6.0 via the 'process_feed' method of the GF_Webhooks class 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.