Unauthorized Booking Cancellation Vulnerability in Hydra Booking Plugin for WordPress

CVE-2025-12787

What is CVE-2025-12787?

The Hydra Booking — Appointment Scheduling & Booking Calendar plugin for WordPress is susceptible to unauthorized cancellation of bookings in all versions including and prior to 1.1.27. This vulnerability arises from the plugin's reliance on a predictably generated token for booking cancellations, coupled with a universally shared nonce across sessions. As a result, unauthenticated attackers can exploit this weakness to target the tfhb_meeting_form_cancel AJAX endpoint, enabling them to cancel bookings at will through brute force methods.

References