Malicious Code Injection in muklis-16 Package: A Threat to npm Users

muklis-16 Updated 26 Nov 2025

Summary

12/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-160799: Malicious code in muklis-16 (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The muklis-16 package is part of the npm ecosystem and is associated with the tea.xyz token reward campaign. This package is designed to facilitate the automatic generation and publication of derivative packages, often with randomized names, to inflate developer reputation scores for token rewards. Its functionality is primarily centered around automating package management tasks, but it has been exploited for malicious purposes.

Vulnerability Detail

The vulnerability in the muklis-16 package 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 is intended to continuously republish variants, polluting the npm registry and potentially compromising the integrity of the ecosystem. The origin of this vulnerability is linked to the tea.xyz token reward campaign, which has been known to flood npm with such malicious packages.

How To Fix

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

npm uninstall muklis-16

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 avoid using the muklis-16 package and monitor your project for any dependencies that may indirectly include it. Regularly audit your package-lock.json file to identify and remove any malicious packages.

Conclusion

The muklis-16 package poses a significant threat to npm users due to its malicious code that modifies package files and repopulates the npm registry with harmful variants. It is crucial to remove this package and monitor your dependencies to maintain the security of your projects.

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FAQ

The muklis-16 package is an npm package associated with the tea.xyz token reward campaign, designed to automate package management tasks.

The vulnerability can lead to the pollution of the npm registry and compromise the integrity of your project's dependencies, potentially introducing further security risks.

You can use Vulert, which monitors and alerts for open-source vulnerabilities in your software. By using the Vulert playground, you can check if your application is affected without any signup.

You should uninstall the muklis-16 package immediately and audit your dependencies to ensure no other malicious packages are present.

No patch is available for the muklis-16 package as it is considered malicious. The best course of action is to remove it from your project.

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How To Fix

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

npm uninstall muklis-16

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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