CVE-2026-1920 PUBLISHED

The Booking Calendar for Appointments and Service Businesses – Booktics plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'Extension_Controller::update_item_permissions_check' function in all versions up to, and including, 1.0.16. This makes it possible for unauthenticated attackers to install addon plugins.

• Kazuma Matsumoto finder

• https://www.wordfence.com/threat-intel/vulnerabilities/id/ab051f4a-030a-44aa-8cbf-665c6c6d31a7?source=cve
• https://plugins.trac.wordpress.org/browser/booktics/tags/1.0.15/core/extensions/controllers/extension-controller.php#L110
• https://plugins.trac.wordpress.org/changeset/3477898/booktics/trunk/core/extensions/controllers/extension-controller.php

• CWE-306 Missing Authentication for Critical Function CWE