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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.

PUBLISHED Reserved 2025-11-05 | Published 2025-11-11 | Updated 2025-11-14 | Assigner Wordfence




MEDIUM: 5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Problem types

CWE-330 Use of Insufficiently Random Values

Product status

Default status
unaffected

* (semver)
affected

Timeline

2025-10-28:Discovered
2025-11-06:Vendor Notified
2025-11-10:Disclosed

Credits

Ahmad Salem finder

References

www.wordfence.com/...-7c03-43c7-b4e1-167fa2b15c03?source=cve

plugins.trac.wordpress.org/...de%2FHydraBookingShortcode.php

cve.org (CVE-2025-12787)

nvd.nist.gov (CVE-2025-12787)

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