The Events Calendar < 6.17.3.1 - Contributor+ Non-Public Event, Venue and Organizer Content Disclosure via REST API

The Events Calendar WordPress plugin before 6.17.3.1 does not restrict non-public content to the users entitled to read it on its public REST archives, allowing users with a low-privilege role such as contributor to read the full contents of every unpublished record on the site, including other users'.