CVE-2017-20206 Appointments <= 2.2.1 - Unauthenticated PHP Object Injection

The Appointments plugin for WordPress is vulnerable to PHP Object Injection in versions up to, and including, 2.2.1 via deserialization of untrusted input from the wpmudevappointments cookie. This allows unauthenticated attackers to inject a PHP Object. Attackers were actively exploiting this...