What the vulnerability does
01Description
The The Events Calendar plugin for WordPress is vulnerable to unauthorized access due to a missing capability check on the 'start_migration', 'cancel_migration', and 'revert_migration' functions in all versions up to, and including, 6.15.13. This makes it possible for authenticated attackers, with subscriber level access and above, to start, cancel, or revert the Custom Tables V1 database migration, including dropping the custom database tables entirely via the revert action.
Explanation of Vulnerability in Simple Terms
02Summary
The Events Calendar for WordPress contains an authorization flaw that allows authenticated users with low privileges to modify or delete event data they should not have access to. The vulnerability affects versions up to 6.15.13. An attacker needs a valid WordPress account to exploit it, but no special privileges or user interaction is required. Site administrators should update to a version newer than 6.15.13.
What an attacker can do
03Attacker Capabilities
Modify or delete events without proper authorization checks.
Potential impact on your site
04Site Impact
Unauthorized users can alter or remove calendar events, disrupting event management and site functionality.
Conditions required to exploit
05Prerequisites
Valid WordPress user account with low-level privileges; network access to the site.
Key dates
06Disclosure timeline
January 20, 2026
CVE published
April 8, 2026
Record updated
