CVE-2025-14469

Description

The Theme Editor plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 3.1. This is due to missing nonce validation on the ms_update AJAX action. This makes it possible for unauthenticated attackers to modify child theme CSS styles via a forged request granted they can trick an administrator into performing an action such as clicking on a link.

References

• https://plugins.trac.wordpress.org/browser/theme-editor/trunk/includes/classes/ms_theme_editor_controller.php#L13
• https://plugins.trac.wordpress.org/browser/theme-editor/trunk/includes/classes/ms_theme_editor_controller.php#L60
• https://wordpress.org/plugins/theme-editor/#developers
• https://www.wordfence.com/threat-intel/vulnerabilities/id/1dd4e39a-9b2f-4728-b026-2dee60257c46?source=cve