High severity8.8NVD Advisory· Published Oct 18, 2025· Updated Apr 15, 2026

CVE-2025-9890

Description

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

WordPress/Theme Editorinferred
Range: <=3.0
Package: https://wordpress.org/plugins/theme-editor

Patches

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

plugins.trac.wordpress.org/browser/theme-editor/trunk/app/controller/theme_controller.phpnvd
plugins.trac.wordpress.org/changesetnvd
www.wordfence.com/threat-intel/vulnerabilities/id/77189684-b794-41a0-8fc0-3320032c2f69nvd

News mentions

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