What the vulnerability does
01Description
The Add Custom Fields to Media plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 2.0.3. This is due to missing nonce validation on the field deletion functionality in the admin display template. The plugin properly validates a nonce for the 'add field' operation (line 24-36), but the 'delete field' operation (lines 38-49) processes the $_GET['delete'] parameter and calls update_option() without any nonce verification. This makes it possible for unauthenticated attackers to delete arbitrary custom media fields 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
Add Custom Fields to Media versions 2.0.3 and earlier contain a cross-site request forgery vulnerability. 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. The vulnerability requires the administrator to visit the attacker's page while authenticated to the WordPress site.
What an attacker can do
03Attacker Capabilities
Perform unwanted actions on the site by tricking an authenticated admin into visiting a malicious webpage.
Potential impact on your site
04Site Impact
An attacker can modify site settings or content if they trick an admin into clicking a malicious link while logged in.
Conditions required to exploit
05Prerequisites
Site admin must be logged in and visit an attacker-controlled webpage.
Key dates
06Disclosure timeline
March 19, 2026
CVE published
April 8, 2026
Record updated
