---
id: CVE-2026-15398
title: >-
  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, 4.1.22
summary: >-
  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, 4.1.22. This is due to the plugin not properly
  verifying th…
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N'
cwe:
  - CWE-862
vendor: arraytics
product: 'Eventin – Event Calendar, Tickets, Registration, Booking & WooCommerce'
affected:
  - eventin_event_calendar_tickets_registration_booking_woocommerce <= 4.1.22
published: '2026-09-09'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T15:33:34.467'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-15398'
references:
  - url: >-
      https://plugins.trac.wordpress.org/browser/wp-event-solution/tags/4.1.15/base/Enqueue/frontend.php#L28
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/wp-event-solution/tags/4.1.15/core/Order/OrderController.php#L440
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/wp-event-solution/tags/4.1.15/core/Order/OrderController.php#L733
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/wp-event-solution/tags/4.1.15/core/Order/OrderController.php#L768
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/wp-event-solution/tags/4.1.15/core/Order/OrderController.php#L926
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/wp-event-solution/tags/4.1.15/utils/locale/vars.php#L35
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/wp-event-solution/tags/4.1.16/base/Enqueue/frontend.php#L28
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/wp-event-solution/tags/4.1.16/core/Order/OrderController.php#L440
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/wp-event-solution/tags/4.1.16/core/Order/OrderController.php#L733
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/wp-event-solution/tags/4.1.16/core/Order/OrderController.php#L768
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/wp-event-solution/tags/4.1.16/core/Order/OrderController.php#L926
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/wp-event-solution/tags/4.1.16/utils/locale/vars.php#L35
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/changeset?reponame=&old=3668637%40wp-event-solution&new=3668637%40wp-event-solution
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/dd7baa69-88f7-4546-96c8-4829a63d0a99?source=cve
    label: security@wordfence.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-09T14:02:05.291171Z'
ingestedAt: '2026-09-09T08:04:11.992Z'
epss: 0.00287
epssPercentile: 0.1896
---

## Overview

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, 4.1.22. 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 bypass payment for paid events, fraudulently mark orders as completed, deplete ticket inventory, and trigger confirmation emails for tickets never purchased. This is exploitable by unauthenticated attackers because the wp_rest nonce is publicly emitted on every frontend page, and the order creation endpoint mints and returns an order_access_token to any caller possessing that nonce — giving unauthenticated users all credentials required to reach the privileged update_booking_status branch.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.