Medium severity · published Nov 11, 2025
CVE-2025-12787
Hydra Booking – All in One Appointment Booking System | Appointment Scheduling, Booking Calendar & WooCommerce Bookings <= 1.1.27 - Unauthenticated Arbitrary Booking Cancellation via Weak Hash Generation
5.3
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 24% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
HB
Hydra Booking — Appointment Scheduling & Booking Calendar · themefic
through 1.1.27 · source: vendor
Affected product
HB
Hydra Booking — Appointment Scheduling & Booking Calendar
themefic
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-12787
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-12787
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/changeset/3392864/hydra-booking/tags/1.1.28/app/Shortcode/HydraBookingShortcode.php?old=3392467&old_path=hydra-booking%2Ftags%2F1.1.27%2Fapp%2FShortcode%2FHydraBookingShortcode.php
www.wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/490dd84f-7c03-43c7-b4e1-167fa2b15c03?source=cve
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