Add Custom CSS and JS <= 1.20 - Cross-Site Request Forgery to Stored Cross-Site Scripting

6.1
Cross-Site Request Forgery (CSRF)
CVE CVE-2024-3903
CVSS 6.1 (Medium)
Publicly Published April 18, 2024
Last Updated May 16, 2024
Researcher Bob Matyas - Automattic

Description

The Add Custom CSS and JS plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.20. This is due to missing or incorrect nonce validation on the custom_js_css page. This makes it possible for unauthenticated attackers to modify plugin settings and inject malicious web scripts 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 Add Custom CSS and JS

Software Type Plugin
Software Slug add-custom-css-and-js (view on wordpress.org)
Patched? No
Remediation No known patch available. Please review the vulnerability's details in depth and employ mitigations based on your organization's risk tolerance. It may be best to uninstall the affected software and find a replacement.
Affected Version
  • <= 1.20

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