Vulnerability · Published Sep 9, 2026 · Assigned by Wordfence

CVE-2026-11821Eventin <= 4.1.17 - Missing Authorization to Authenticated (Subscriber+) Notification Flow Management via notification-flow REST API Endpoint

Medium 5.4

In plain English

A medium-severity missing authorization in Eventin – Event Calendar, Tickets, Registration, Booking & WooCommerce from arraytics. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 26% of all known vulnerabilities).

Severity (CVSS 3.1)5.4Medium

Exploit odds (30 days)0.3%top 74.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
arraytics	Eventin – Event Calendar, Tickets, Registration, Booking & WooCommerce	0 – through 4.1.17

Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

In plain English

Official description

Affected products (as reported)

References