CVE-2026-11821: Arraytics Eventin – Event Calendar, Tickets, Registration, Booking & Woocommerce

Medium severity, CVSS 5.4. EPSS: 0.2% chance of exploitation in the next 30 days.

The Eventin – Event Calendar, Event Registration, Tickets & Booking (AI Powered) plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 4.1.17. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to view, create, update, clone, and delete notification flow event automation workflows that should be restricted to administrators.

Affected products

• Arraytics Eventin – Event Calendar, Tickets, Registration, Booking & Woocommerce: up to and including 4.1.17

Published 2026-09-09. Last modified 2026-09-09.