CVSS base score
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
What the vulnerability does
The Theme Editor plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 3.0. This is due to missing or incorrect nonce validation on the 'theme_editor_theme' page. This makes it possible for unauthenticated attackers to achieve remote code execution 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
Theme Editor versions 3.0 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 unauthorized actions on the site without the admin's knowledge or consent. This could allow the attacker to modify theme files, inject malicious code, or alter site configuration. No authentication is required from the attacker's side, but the victim must visit a malicious page.
What an attacker can do
Perform unauthorized actions (modify themes, inject code) on behalf of a logged-in administrator.
Potential impact on your site
An attacker can modify your site's theme files or inject malicious code if an admin visits a compromised page.
Conditions required to exploit
Administrator must visit a malicious webpage while logged into the site.
Key dates
External resources
