Malicious Code Injection in sunderlan-uyud-vamaiunin Package

sunderlan-uyud-vamaiunin Updated 26 Nov 2025

Summary

12/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-166475: Malicious code in sunderlan-uyud-vamaiunin (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The sunderlan-uyud-vamaiunin 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, which can inflate developer reputation scores for token rewards. However, it has been identified as containing malicious code that compromises the integrity of the npm registry.

Vulnerability Detail

The vulnerability originates from the package's malicious payload, which modifies the package.json file by removing private flags and altering 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 lead to a significant increase in spam packages, affecting the overall reliability and security of the npm ecosystem.

How To Fix

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

npm uninstall sunderlan-uyud-vamaiunin

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 measure, you can avoid using the sunderlan-uyud-vamaiunin package and look for alternative packages that provide similar functionality without the associated risks. Regularly monitor your dependencies for any updates or vulnerabilities.

Conclusion

The sunderlan-uyud-vamaiunin package poses a significant risk due to its malicious code that alters project files and floods the npm registry. It is essential to remove this package and monitor your dependencies for vulnerabilities to maintain the integrity of your projects.

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FAQ

It is an npm package involved in the tea.xyz token reward campaign, designed to generate and publish derivative packages automatically.

The malicious code can compromise your project's integrity by modifying package.json and flooding the npm registry with spam packages.

You should uninstall the package immediately using 'npm uninstall sunderlan-uyud-vamaiunin' and check for any other affected dependencies.

Yes, you can use Vulert to monitor and alert for open-source vulnerabilities in your software. It analyzes your package-lock.json file for potential issues.

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

How To Fix

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

npm uninstall sunderlan-uyud-vamaiunin

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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