CVE-2025-13317: Appointment Booking Calendar <= 1.3.96 - Missing Authorization to Arbitrary Booking Confirmation via 'cpabc_ipncheck' Parameter
The Appointment Booking Calendar plugin for WordPress is vulnerable to Missing Authorization in all versions up to, and including, 1.3.96. This is due to the plugin exposing an unauthenticated booking processing endpoint (cpabcappointmentscheckIPNverification) that trusts attacker-supplied payment notifications without verifying their origin, authenticity, or requiring proper authorization checks. This makes it possible for unauthenticated attackers to arbitrarily confirm bookings and insert them into the live calendar via the 'cpabcipncheck' parameter, triggering administrative and customer notification emails and disrupting operations.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2025-13317?
CVE-2025-13317 is classified as a high-severity vulnerability due to its potential impact on authorization and data exposure.
How do I fix CVE-2025-13317?
To fix CVE-2025-13317, you should update the Appointment Booking Calendar plugin to version 1.3.97 or later.
What vulnerable versions are affected by CVE-2025-13317?
All versions of the Appointment Booking Calendar plugin up to and including 1.3.96 are affected by CVE-2025-13317.
What specific issue does CVE-2025-13317 describe?
CVE-2025-13317 describes a Missing Authorization vulnerability that exposes an unauthenticated booking processing endpoint.
Can exploiting CVE-2025-13317 lead to data breaches?
Yes, exploiting CVE-2025-13317 could lead to unauthorized access and potential data breaches due to the lack of proper authorization mechanisms.