Which Add Custom CSS and JS versions are affected?

The primary affected range is Versions up to 1.20.

How should operators remediate CVE-2024-3903?

No patched release is listed in this record, so monitor the vendor and linked references before accepting the risk.

Vulnerability Report

Plugin Medium No patch listed CVE-2024-3903

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

Q: What is CVE-2024-3903?

CVE-2024-3903 is tracked as a Stored Cross-Site Scripting issue affecting the Plugin Add Custom CSS and JS.

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.

Quick Answer

CVE-2024-3903 is a medium severity with CVSS 6.1 Stored Cross-Site Scripting issue affecting the Plugin Add Custom CSS and JS. It affects Versions up to 1.20 and is listed without a confirmed patched release.

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Published

Apr 18, 2024

Last Updated

May 16, 2024

Slug

add-custom-css-and-js

Risk Profile

6.1 CVSS Score

Weakness

Cross-Site Request Forgery (CSRF)

Vector

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

Researchers

Bob Matyas

Operational Summary

What the operator needs to know

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Patch Status

No patched release listed

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.

Operator Briefing

CVE-2024-3903 is tracked for the Plugin Add Custom CSS and JS as medium severity with CVSS 6.1. The affected range is Versions up to 1.20. No fixed release is listed in this feed entry, so operators should monitor the vendor and reference links before accepting the risk.

Issue Type

Stored Cross-Site Scripting

Primary Fixed Version

Not published

Primary Affected Range

Versions up to 1.20

Tracking ID

CVE-2024-3903

References

https://www.wordfence.com/threat-intel/vulnerabilities/id/277d09b6-cc2a-41db-8b2d-1bad8e49c0db?source=api-prod

Detailed Metadata

Software Type	Plugin
Software Slug	add-custom-css-and-js View on wordpress.org
CVE	CVE-2024-3903
Patched Versions	No patched versions published.
Affected Versions	Versions up to 1.20

Licensing Notices

This record contains material that is subject to copyright

DEFIANT

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MITRE

License: CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE®). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy. Read more