What the vulnerability does
01Description
The Custom Post Type plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.0. This is due to missing nonce validation on the custom post type deletion functionality. This makes it possible for unauthenticated attackers to delete custom post types via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
Explanation of Vulnerability in Simple Terms
02Summary
Custom Post Type versions 1.0 and earlier are vulnerable to cross-site request forgery (CSRF) attacks. An attacker can craft a malicious webpage that, when visited by a logged-in site administrator, performs unwanted actions on the site without the administrator's knowledge or consent. The vulnerability requires user interaction—the admin must visit the attacker's page while logged in.
What an attacker can do
03Attacker Capabilities
Perform unwanted actions on the site by tricking a logged-in admin into visiting a malicious webpage.
Potential impact on your site
04Site Impact
An attacker can modify site content or settings by exploiting an admin's browser session without the admin's awareness.
Conditions required to exploit
05Prerequisites
A logged-in site administrator must visit an attacker-controlled webpage while authenticated to the site.
Key dates
06Disclosure timeline
November 21, 2025
CVE published
April 8, 2026
Record updated