Vulnerability in Eventin – Event Calendar, Tickets, Registration, Booking & WooCommerce — CVE-2026-11821

What to do now

Update Eventin – Event Calendar, Tickets, Registration, Booking & WooCommerce to 4.1.18 or later.

Affected versions

• Everything up to and including 4.1.17

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.

This description is reproduced verbatim from the public vulnerability record.

• https://plugins.trac.wordpress.org/browser/wp-event-solution/tags/4.1.17/vendor/themewinter/email-notification-sdk/src/Flow/FlowAPI.php#L66
• https://plugins.trac.wordpress.org/browser/wp-event-solution/tags/4.1.18/vendor/themewinter/email-notification-sdk/src/Flow/FlowAPI.php#L66
• https://plugins.trac.wordpress.org/changeset/3612206/wp-event-solution/trunk/vendor/themewinter/email-notification-sdk/src/Flow/FlowAPI.php
• https://www.wordfence.com/threat-intel/vulnerabilities/id/560a3102-c274-450f-9119-ea47ee2e7c65?source=cve

This page is compiled automatically from public databases. Accuracy is not guaranteed; confirm against the vendor advisory before acting.