Critical Malicious Code Vulnerability in iron-media-query Package

iron-media-query Updated 10 Mar 2026

Summary

10/03/2026
CRITICAL
No i
Critical
Not published

MAL-2026-1310: Malicious code in iron-media-query (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The iron-media-query package is an npm library designed to facilitate media query parsing and manipulation in JavaScript applications. It is commonly used in web development to create responsive designs. However, this package has been compromised, embedding malicious code that poses significant security risks to any system utilizing it.

Vulnerability Detail

The vulnerability originates from the presence of malicious code within the iron-media-query package. This code can fully compromise any computer where the package is installed or running, allowing unauthorized access to sensitive information such as secrets and keys. The implications of this vulnerability are severe, as it can lead to data breaches and unauthorized control over affected systems.

How To Fix

This package is malicious. Remove it and rotate any credentials it could have accessed.

npm uninstall iron-media-query

If it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.

Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →

Workaround

There are no effective workarounds for this vulnerability other than removing the package entirely. Ensure that your application does not rely on iron-media-query for its functionality.

Conclusion

The iron-media-query package has been identified as containing malicious code that compromises the security of any system using it. Immediate action is required to uninstall the package and secure any sensitive information. Regular monitoring for vulnerabilities, such as using Vulert, can help maintain the security of your applications.

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FAQ

You should immediately uninstall the iron-media-query package and rotate any sensitive information stored on the affected system.

You can use Vulert, which monitors and alerts for open-source vulnerabilities. Visit Vulert Scanner to check your application without any signup.

No, there is currently no patched version of the iron-media-query package. The only solution is to remove the package.

Failing to address this vulnerability can lead to unauthorized access to your system, data breaches, and potential control by malicious actors.

It is highly discouraged to continue using iron-media-query due to the embedded malicious code. The safest approach is to remove it entirely.

How To Fix

This package is malicious. Remove it and rotate any credentials it could have accessed.

npm uninstall iron-media-query

If it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.

Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →

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