The EventPrime WordPress plugin before 3.5.0 does not properly validate permissions when updating bookings, allowing users to change/cancel bookings for other users. Additionally, the feature is lacking a nonce.

The EventPrime – Events Calendar, Bookings and Tickets plugin for WordPress is vulnerable to unauthorized access of data due to a missing capability checks on the exportsubmittionattendees function in all versions up to, and including, 4.0.7.3. This makes it possible for authenticated attackers, with Subscriber-level access and above, to download list of attendees for any event.

The EventPrime – Events Calendar, Bookings and Tickets plugin for WordPress is vulnerable to unauthorized booking note creation due to a missing capability check on the 'bookingaddnotes' function in all versions up to, and including, 4.2.0.0. This makes it possible for authenticated attackers, with Subscriber-level access and above, to add a note to the backend view of any booking.