Malicious Code Injection in mutr-sds-mutrio Package

mutr-sds-mutrio Updated 26 Nov 2025

Summary

12/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-161158: Malicious code in mutr-sds-mutrio (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The mutr-sds-mutrio package is part of the npm ecosystem, often utilized for various JavaScript applications. It is designed to facilitate certain functionalities within the npm framework. However, this package has been identified as part of a malicious campaign that floods the npm registry with harmful scripts, compromising the integrity of the software supply chain.

Vulnerability Detail

The vulnerability in the mutr-sds-mutrio package stems from its association with a malicious campaign that modifies the package.json file to remove private flags, alters version numbers, and generates random package names. This behavior is intended to inflate developer reputation scores for token rewards, leading to potential security risks such as unauthorized access and pollution of the npm registry. The malicious payload can significantly affect developers relying on this package, as it may introduce unintentional dependencies and security loopholes.

How To Fix

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

npm uninstall mutr-sds-mutrio

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

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Workaround

As a temporary workaround, you can remove the package from your project by executing the following command in your terminal: npm uninstall mutr-sds-mutrio. This will help prevent any malicious code from executing in your application.

Conclusion

The mutr-sds-mutrio package poses a significant security risk due to its malicious code injection. It is essential for developers to be vigilant about the packages they use and to promptly address any vulnerabilities to maintain the integrity of their applications.

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FAQ

mutr-sds-mutrio is an npm package that has been identified as part of a malicious campaign aimed at manipulating npm registry data.

The vulnerability can lead to unauthorized modifications in your package.json file, potentially introducing security risks and unintentional dependencies.

If you have installed the mutr-sds-mutrio package, it is crucial to uninstall it immediately and check your project for any unauthorized changes.

Yes, you can use Vulert, which monitors and alerts for open-source vulnerabilities in your software by analyzing your package-lock.json file.

You can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.

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How To Fix

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

npm uninstall mutr-sds-mutrio

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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