Freshdesk (official) <= 1.7 - Open Redirect

The Freshdesk (official) Plugin for WordPress is vulnerable to Open Redirect in versions up to, and including, 1.7. This is due to the application failing to properly verify user-supplied input from the `$redirect_url` value. This makes it possible for unauthenticated attackers to exploit this issue and redirect users to arbitrary web sites and conduct phishing attacks; other attacks are also possible.