Vulnerabilities / Eventin – Events Calendar, Tickets, Registration, Booking & WooCommerce / WPSEC-2026-1153
Eventin – Events Calendar, Tickets, Registration, Booking & WooCommerce <= 4.1.26 - Authenticated (Contributor+) Insecure Direct Object Reference to Arbitrary Post Featured Image Modification
Medium 4.3
CWE-639Fixed in 4.1.27
- ID
- WPSEC-2026-1153
- Plugin
- Eventin – Events Calendar, Tickets, Registration, Booking & WooCommerce (wp-event-solution)
- Affected
- all versions before 4.1.27
- Remediation
- Update to 4.1.27 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- Weakness
- CWE-639
- Usage
- Plugin Medium · Affected versions Medium among sites WPSec scans, 2026-10-16
- Attack surface
- Eventin – Events Calendar, Tickets, Registration, Booking & WooCommerce on WPSec AttackSurface
- Fix released
- Published
Description
The Eventin – Events Calendar, Tickets, Registration, Booking & WooCommerce plugin for WordPress is vulnerable to Insecure Direct Object Reference via the event create REST endpoint in all versions up to, and including, 4.1.26, due to the endpoint using a user-supplied 'id' body parameter, instead of the newly created event, to choose which post's featured image to set. This makes it possible for authenticated attackers, with Contributor-level access and above, to change the featured image of any post or page on the site.
References
- https://wpsec.com/vuln/WPSEC-2026-1153/
- https://plugins.svn.wordpress.org/wp-event-solution/tags/4.1.27/
- https://wordpress.org/plugins/wp-event-solution/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
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