Malicious Code Injection in mutaus-mansis-nutyi: A Threat to npm Ecosystem

mutaus-mansis-nutyi Updated 26 Nov 2025

Summary

12/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-161101: Malicious code in mutaus-mansis-nutyi (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

mutaus-mansis-nutyi is an npm package that has been identified as part of a malicious campaign targeting the npm registry. This package is associated with the tea.xyz token reward initiative, which aims to inflate developer reputation scores by flooding the registry with derivative packages. The package's functionality is compromised, making it a potential risk for developers who rely on it for legitimate purposes.

Vulnerability Detail

The vulnerability in mutaus-mansis-nutyi stems from its malicious code that modifies the package.json file to remove private flags, alters version numbers, and generates random package names. This behavior leads to the continuous republishing of variants, polluting the npm registry and potentially affecting other packages and developers. The origin of this vulnerability is linked to the tea.xyz token reward campaign, which employs autopublish scripts to automate the creation of these malicious packages.

How To Fix

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

npm uninstall mutaus-mansis-nutyi

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, avoid using the mutaus-mansis-nutyi package and consider using alternative packages that provide similar functionality without the associated risks. You can also monitor your package dependencies using tools like Vulert, which can alert you to vulnerabilities in real-time.

Conclusion

The mutaus-mansis-nutyi package poses a significant risk due to its malicious code designed to manipulate the npm registry. It is essential for developers to be vigilant, remove affected packages, and utilize tools like Vulert to monitor for vulnerabilities in their projects.

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FAQ

mutaus-mansis-nutyi is an npm package that has been identified as part of a malicious campaign to inflate developer reputation scores.

The vulnerability can lead to the pollution of the npm registry and may compromise the integrity of your project by introducing malicious code.

You should uninstall the mutaus-mansis-nutyi package immediately using the command: npm uninstall mutaus-mansis-nutyi.

You can use Vulert, which monitors your package-lock.json file for vulnerabilities and alerts you in real-time without requiring code access.

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

Sponsored Lume, the Habilume companion Habilume Habit tracker with a companion that grows with you Complete habits, earn Lume Points, and watch your Lume grow as you stay consistent. App Store Google Play

How To Fix

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

npm uninstall mutaus-mansis-nutyi

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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