CVE-2026-2520

The Online Scheduling and Appointment Booking System – Bookly plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'updateAddon' function in all versions up to, and including, 27.2. This makes it possible for authenticated attackers, with Subscriber-level access and above, to update any plugin with a main file of 'main.php' to its latest version.

• https://plugins.trac.wordpress.org/browser/bookly-responsive-appointment-booking-tool/trunk/lib/PluginsUpdater.php#L10
• https://plugins.trac.wordpress.org/browser/bookly-responsive-appointment-booking-tool/trunk/lib/PluginsUpdater.php#L105
• https://plugins.trac.wordpress.org/changeset/3504922/
• https://www.wordfence.com/threat-intel/vulnerabilities/id/b7edc69b-363d-49df-b82b-a9ad4fe9224a?source=cve