CVE-2025-12787 Weak cryptography in Hydra Booking — Appointment Scheduling & Booking Calendar
Unauthenticated attackers can cancel arbitrary bookings by brute-forcing weakly generated tokens in the Hydra Booking WordPress plugin.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-12787?
CVE-2025-12787 is a medium-severity vulnerability in themefic Hydra Booking — Appointment Scheduling & Booking Calendar, published on 11 Nov 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Hydra Booking — Appointment Scheduling & Booking Calendar plugin for WordPress is vulnerable to unauthorized booking cancellation in all versions up to, and including, 1.1.27. This is due to the plugin's "tfhb_meeting_form_submit_callback" function using insufficiently random values to generate booking cancellation tokens, combined with a globally shared nonce. This makes it possible for unauthenticated attackers to cancel arbitrary bookings via brute force attacks against the tfhb_meeting_form_cencel AJAX endpoint.
Weakness: CWE-330
Which versions are affected by CVE-2025-12787?
How do I fix CVE-2025-12787?
No fix has been published for CVE-2025-12787 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-12787 being exploited?
There is no known exploitation of CVE-2025-12787 in the wild and no public exploit code.
Sources
Also known as GHSA-xj4g-rjq9-vrx7.