CVE-2025-13317
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-11-22

Last updated on: 2025-11-22

Assigner: Wordfence

Description
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 (cpabc_appointments_check_IPN_verification) 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 'cpabc_ipncheck' parameter, triggering administrative and customer notification emails and disrupting operations.
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Meta Information
Published
2025-11-22
Last Modified
2025-11-22
Generated
2026-06-16
AI Q&A
2025-11-22
EPSS Evaluated
2026-06-15
NVD
CVE-2025-13317
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
wordpress appointment_booking_calendar 1.3.96
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-862 The product does not perform an authorization check when an actor attempts to access a resource or perform an action.
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Executive Summary

The Appointment Booking Calendar plugin for WordPress has a Missing Authorization vulnerability in all versions up to 1.3.96. It exposes an unauthenticated booking processing endpoint that accepts attacker-supplied payment notifications without verifying their origin or authenticity. This allows attackers to confirm bookings arbitrarily and insert them into the live calendar, triggering notification emails and disrupting normal operations.

Impact Analysis

This vulnerability can allow unauthenticated attackers to arbitrarily confirm bookings and insert fake appointments into the live calendar. This can disrupt business operations by triggering false administrative and customer notification emails, potentially causing confusion, operational inefficiencies, and loss of trust.

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