PT-2026-66997 · WordPress · Theme Editor
CVSS v3.1
4.3
Medium
| Vector | AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N |
Name of the Vulnerable Software and Affected Versions
Theme Editor plugin for WordPress versions prior to 3.2
Description
The plugin is susceptible to Cross-Site Request Forgery (CSRF), a flaw where an attacker tricks a victim into executing unwanted actions on a web application. This occurs due to missing nonce validation—a security measure used to ensure that a request was intentionally sent by the user—on the
ms update AJAX action. Unauthenticated attackers can exploit this to modify child theme CSS styles by tricking an administrator into clicking a malicious link.Recommendations
Update the Theme Editor plugin for WordPress to version 3.2 or later.
As a temporary mitigation, restrict access to the
ms update AJAX action.Fix
CSRF
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Weakness Enumeration
Related Identifiers
Affected Products
Theme Editor