CVE-2025-9890

HIGH

Theme Editor <= 3.0 - Cross-Site Request Forgery via Missing Nonce Validation

Title source: llm

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.

References (3)

Core 3

Core References

Product

https://plugins.trac.wordpress.org/browser/theme-editor/trunk/app/controller/theme_controller.php#L87

Product

https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3379404%40theme-editor&new=3379404%40theme-editor&sfp_email=&sfph_mail=

Third Party Advisory

https://www.wordfence.com/threat-intel/vulnerabilities/id/77189684-b794-41a0-8fc0-3320032c2f69?source=cve

Scores

CVSS v3 8.8

EPSS 0.0037

EPSS Percentile 28.2%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact total

Details

CWE

CWE-352

Status published

Products (1)

mndpsingh287/Theme Editor < 3.0

Published Oct 18, 2025

Tracked Since Feb 18, 2026