Custom CSS, JS & PHP <= 2.4.1 - Cross-Site Request Forgery to Remote Code Exectuiron

8.8
Cross-Site Request Forgery (CSRF)
CVE CVE-2025-39601
CVSS 8.8 (High)
Publicly Published April 16, 2025
Last Updated April 21, 2025
Researcher Nguyen Xuan Chien

Description

The Custom CSS, JS & PHP plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 2.4.1. This is due to missing or incorrect nonce validation on the save_options() function. This makes it possible for unauthenticated attackers to inject arbitrary code via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

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Vulnerability Details for Custom CSS, JS & PHP

Software Type Plugin
Software Slug custom-css (view on wordpress.org)
Patched? Yes
Remediation Update to version 2.4.2, or a newer patched version
Affected Version
  • <= 2.4.1
Patched Version
  • 2.4.2

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