Royal Elementor Addons 1.3.71 - 1.7.1069 - Unauthenticated Mailchimp Audience Injection via mailchimp_subscribe

The Royal Addons for Elementor WordPress plugin before 1.7.1070 does not perform any authorization check before using the site owner's stored Mailchimp credential to add subscriber records to an audience chosen by the request, allowing unauthenticated attackers to inject arbitrary email addresses and contact details into the site owner's Mailchimp account as confirmed subscribers.