Bookit — Booking & Appointment Calendar vulnerabilities

The Bookit — Booking & Appointment Calendar WordPress plugin before 2.6.0.5 does not perform an authorization check on one of its appointment-retrieval actions, allowing users with a low-privilege Bookit-specific role to read other users' appointment records, including customer names, email addresses, phone numbers and private booking comments.

The Bookit — Booking & Appointment Calendar WordPress plugin before 2.6.0.5 does not perform a capability check in one of its appointment-deletion functions, allowing users with its low-privileged custom Staff role to delete arbitrary appointments.

The Bookit — Booking & Appointment Calendar WordPress plugin before 2.6.0.1 does not properly restrict the data returned by an availability-check request. This allows unauthenticated users to retrieve other customers' appointment details, including free-text booking comments and contact information.