---
id: CVE-2025-9890
title: >-
  The Theme Editor plugin for WordPress is vulnerable to Cross-Site Request
  Forgery in all versions up to, and including, 3.0
summary: >-
  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 fo…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'
cwe:
  - CWE-352
published: '2025-10-18'
updated: '2026-09-26'
sourceUpdated: '2026-09-26T00:10:00.127'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-9890'
references:
  - url: >-
      https://plugins.trac.wordpress.org/browser/theme-editor/trunk/app/controller/theme_controller.php#L87
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3379404%40theme-editor&new=3379404%40theme-editor&sfp_email=&sfph_mail=
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/77189684-b794-41a0-8fc0-3320032c2f69?source=cve
    label: security@wordfence.com
tags:
  - nvd
epss: 0.00401
epssPercentile: 0.31639
ingestedAt: '2026-09-26T00:22:39.962Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.