CVE-2026-11821
Eventin <= 4.1.17 - Missing Authorization to Authenticated (Subscriber+) Notification Flow Management via notification-flow REST API Endpoint
- State
- Published
- Severity
- 5.4 Medium
- Published
- Sep 9, 2026
- Updated
- Sep 9, 2026
- Reserved
- Jun 9, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 5.4 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N | Wordfence |
Weaknesses
- CWE-862 Missing Authorization
Affected Products
| Product | Versions |
|---|---|
Eventin – Event Calendar, Tickets, Registration, Booking & WooCommercearraytics |
|
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/560a3102-c274-450f-9119-ea47ee2e7c65?source=cve
- 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
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