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

5.4
Missing Authorization
CVE CVE-2026-11821
CVSS 5.4 (Medium)
Publicly Published September 8, 2026
Last Updated September 9, 2026
Researcher Sushi Com Abacate

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.

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Vulnerability Details for Eventin – Events Calendar, Tickets, Registration, Booking & WooCommerce

Software Type Plugin
Software Slug wp-event-solution (view on wordpress.org)
Patched? Yes
Remediation Update to version 4.1.18, or a newer patched version
Affected Version
  • <= 4.1.17
Patched Version
  • 4.1.18

Recent vulnerabilities in Eventin – Events Calendar, Tickets, Registration, Booking & WooCommerce

# Title CVE ID CVSS Researchers Date
1 Eventin – Events Calendar, Tickets, Registration, Booking & WooCommerce <= 4.1.25 - Missing Authorization CVE-2026-97300 5.3 Ratchanon Chamnankit October 5, 2026
2 Eventin – Events Calendar, Tickets, Registration, Booking & WooCommerce <= 4.1.25 - Missing Authorization CVE-2026-103684 5.3 Peter Tang October 5, 2026
3 Eventin – Events Calendar, Tickets, Registration, Booking & WooCommerce <= 4.1.25 - Unauthenticated Information Exposure CVE-2026-105073 5.3 Peter Tang October 5, 2026
4 Eventin – Event Calendar, Tickets, Registration, Booking & WooCommerce <= 4.1.23 - Authenticated (Subscriber+) Privilege Escalation via map_meta_cap Filter CVE-2026-75983 7.5 Wordfence PRISM September 14, 2026
5 Eventin <= 4.1.23 - Authenticated (Custom+) Stored Cross-Site Scripting via 'etn_shedule_objective' schedule_slot Parameter CVE-2026-15402 6.4 Wordfence PRISM September 14, 2026
6 Eventin <= 4.1.23 - Missing Authorization CVE-2026-84905 4.3 Karthik Ramakrishnan September 14, 2026
7 Eventin <= 4.1.23 - Missing Authorization CVE-2026-77702 5.3 Nir Yehoshua September 14, 2026
8 Eventin <= 4.1.23 - Unauthenticated Payment Bypass CVE-2026-84906 5.3 cyberkareem September 14, 2026
9 Eventin <= 4.1.23 - Missing Authorization CVE-2026-84907 5.3 Karthik Ramakrishnan September 14, 2026
10 Eventin – Event Calendar, Event Registration, Tickets & Booking (AI Powered) <= 4.1.22 - Authenticated (Subscriber+) Missing Authorization to Order Completion / Free Ticket Redemption CVE-2026-15398 4.3 Wordfence PRISM September 8, 2026

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