What the vulnerability does
01Description
Cross-Site Request Forgery (CSRF) vulnerability in Alex Prokopenko / JustCoded Just TinyMCE Custom Styles just-tinymce-styles allows Cross Site Request Forgery.This issue affects Just TinyMCE Custom Styles: from n/a through <= 1.2.1.
Explanation of Vulnerability in Simple Terms
02Summary
Just TinyMCE Custom Styles versions up to 1.2.1 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 within the plugin without the admin's knowledge or consent. The vulnerability requires the victim to visit the attacker's page while authenticated to the WordPress site.
What an attacker can do
03Attacker Capabilities
Perform unwanted actions in the plugin on behalf of a logged-in administrator without their consent.
Potential impact on your site
04Site Impact
An attacker could modify plugin settings or styles by tricking an admin into visiting a malicious link while logged in.
Conditions required to exploit
05Prerequisites
Administrator must be logged into WordPress and visit an attacker-controlled webpage.
Key dates
06Disclosure timeline
December 9, 2025
CVE published
April 28, 2026
Record updated