Malicious Code Injection in mutr-sds-nutr Package

mutr-sds-nutr Updated 26 Nov 2025

Summary

12/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-161159: Malicious code in mutr-sds-nutr (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The mutr-sds-nutr package is part of the npm ecosystem, often used for various JavaScript applications. It is designed to facilitate certain functionalities within the npm environment. However, this package has been identified as part of a malicious campaign that exploits npm's publishing mechanisms, leading to significant security risks for developers and users alike.

Vulnerability Detail

The vulnerability in the mutr-sds-nutr package originates from its association with a token reward campaign that floods npm with malicious packages. These packages contain scripts that automatically modify the package.json file to remove private flags, alter version numbers, and generate random package names. This behavior not only inflates developer reputation scores but also pollutes the npm registry with potentially harmful variants, posing a risk to any application that relies on this package.

How To Fix

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

npm uninstall mutr-sds-nutr

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

As a temporary workaround, you can avoid using the mutr-sds-nutr package altogether and look for alternative packages that provide similar functionality without the associated risks. Additionally, consider using tools like Vulert to monitor your project for vulnerabilities in real-time.

Conclusion

The mutr-sds-nutr package poses a significant security risk due to its malicious code injection capabilities. It is essential to remove this package from your projects and monitor your applications for vulnerabilities using tools like Vulert. Staying informed and proactive is key to maintaining the security of your software.

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FAQ

The mutr-sds-nutr package is an npm package that has been identified as part of a malicious campaign, designed to manipulate npm's publishing system.

This vulnerability can lead to the injection of malicious code into your application, potentially compromising its integrity and security.

If you have installed the mutr-sds-nutr package, you should uninstall it immediately and look for alternative packages.

You can use Vulert, a tool that monitors your package-lock.json file for open-source vulnerabilities in real-time, ensuring your application remains secure.

Yes, you can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without any signup.

How To Fix

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

npm uninstall mutr-sds-nutr

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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