Malicious Code Injection in nutr-madan-mutriao Package: A Threat to npm Users

nutr-madan-mutriao Updated 26 Nov 2025

Summary

12/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-163916: Malicious code in nutr-madan-mutriao (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The nutr-madan-mutriao package is part of the npm ecosystem, primarily used for JavaScript applications. It is associated with the tea.xyz token reward campaign, which has been known to flood the npm registry with malicious packages. These packages often contain scripts that automate the generation and publication of derivative packages, leading to potential security risks for developers and users alike.

Vulnerability Detail

The vulnerability in the nutr-madan-mutriao package stems from its malicious payload, which modifies the package.json file to remove private flags and alters version numbers. It generates random package names, often themed around Indonesian culture, and continuously republishes these variants to pollute the npm registry. This behavior can inflate developer reputation scores fraudulently and compromise the integrity of the npm ecosystem.

How To Fix

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

npm uninstall nutr-madan-mutriao

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 nutr-madan-mutriao package and any other packages associated with the tea.xyz token reward campaign. Monitor your package-lock.json file for any unauthorized changes and consider using tools like Vulert to track vulnerabilities in your dependencies.

Conclusion

The nutr-madan-mutriao package poses a significant threat to npm users due to its malicious behavior of modifying package files and republishing variants. It is essential to remove this package from your projects and monitor your dependencies for vulnerabilities to maintain the security of your applications.

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FAQ

The nutr-madan-mutriao package is an npm package that is part of a malicious campaign aimed at inflating developer reputation scores through the publication of derivative packages.

The vulnerability can lead to unauthorized modifications in your package.json file, potentially compromising your application's integrity and security.

If you have installed the nutr-madan-mutriao package, you should uninstall it immediately using 'npm uninstall nutr-madan-mutriao' and check for any unauthorized changes in your project.

You can use tools like Vulert, which monitors your package-lock.json file for open-source vulnerabilities in real-time without requiring code access or installation.

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 nutr-madan-mutriao

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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