5.3
Medium
CVE-2025-13317 The Appointment Booking Calendar plugin for WordPress is vulnerable to Missing Authorization in all versions up to,…
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Appointment Booking Calendar 1.3 | earliest → 1.3.96 | No fix stated |
Other CVEs of Appointment Booking Calendar
The 7 CVEs of Appointment Booking Calendar →
CVE-2026-111727
The Appointment Booking Calendar plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the…
6.4
Medium
CVE-2026-12113
The Appointment Booking Calendar plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up…
4.3
Medium
CVE-2026-12111
The Appointment Booking Calendar plugin for WordPress is vulnerable to Sensitive Information Exposure in versions up to,…
4.3
Medium
CVE-2025-64261
Missing Authorization vulnerability in codepeople Appointment Booking Calendar appointment-booking-calendar allows…
5.4
Medium