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

2025-11-10 22:27

Strategic Overview

Status: Patched in 1.1.28
Affected Plugin: Hydra Booking — Appointment Scheduling & Booking Calendar
Affected Version: <= 1.1.27
CVSS: 5.3Medium
Weakness type: CWE-330 · Use of Insufficiently Random Values
CVE: CVE-2025-12787

View all Hydra Booking — Appointment Scheduling & Booking Calendar vulnerabilities

At a glance

CVE-2025-12787 is a medium-severity Use of Insufficiently Random Values vulnerability in the Hydra Booking WordPress plugin, affecting versions <= 1.1.27. It carries a CVSS score of 5.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 1.1.28; sites on affected versions should update now. Disclosed November 2025, reported by Ahmad Salem (a7mad.cc).

Vulnerability Overview

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.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user.

CWE-330: Use of Insufficiently Random Values

The product uses insufficiently random numbers or values in a security context that depends on unpredictable numbers.

Remediation

Update to version 1.1.28, or a newer patched version

How does WordSec protect against this?

This one needs no account at all, which puts it outside what login hardening can reach; WordSec's login security narrows the account-level paths around it, and the firewall is what inspects the request itself. None of that substitutes for the fix: Hydra Booking 1.1.28 closes this, and updating the plugin is the step that ends it.

Login Security
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2025-12787 https://www.wordfence.com/threat-intel/vulnerabilities/id/490dd84f-7c03-43c7-b4e1-167fa2b15c03 https://nvd.nist.gov/vuln/detail/CVE-2025-12787

Related records

Other vulnerabilities in Hydra Booking — Appointment Scheduling & Booking Calendar

CVSS Vector

5.3

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityNone
IntegrityLow
AvailabilityNone

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