CVE-2025-9890: MNDPSINGH287 Theme Editor

High severity, CVSS 8.8. EPSS: 0.4% chance of exploitation in the next 30 days.

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.

Affected products

• MNDPSINGH287 Theme Editor: up to and including 3.0

Published 2025-10-18. Last modified 2026-09-26.