Malicious Code Injection in sunderlan-uyilud-vamnauin Package

sunderlan-uyilud-vamnauin Updated 26 Nov 2025

Summary

12/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-166443: Malicious code in sunderlan-uyilud-vamnauin (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The sunderlan-uyilud-vamnauin package is part of the npm ecosystem, which is widely used for JavaScript package management. This package is associated with the tea.xyz token reward campaign, which has been known to flood the npm registry with malicious packages. The primary functionality of this package is to generate and publish derivative packages, but it has been compromised to include harmful scripts that manipulate package metadata.

Vulnerability Detail

The vulnerability originates from the malicious intent behind the package, 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 not only compromises the integrity of the npm ecosystem but also poses risks to developers who may unknowingly use these tainted packages, potentially leading to reputation damage and security breaches.

How To Fix

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

npm uninstall sunderlan-uyilud-vamnauin

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 sunderlan-uyilud-vamnauin package and look for alternative packages that provide similar functionality without the associated risks. Always verify the integrity and reputation of packages before including them in your project.

Conclusion

The sunderlan-uyilud-vamnauin package has been identified as a malicious entity within the npm ecosystem, posing significant risks to developers and their projects. It is crucial to remove this package and monitor your dependencies for vulnerabilities to maintain the security and integrity of your software.

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FAQ

It is an npm package associated with the tea.xyz token reward campaign, known for flooding the npm registry with malicious packages.

The vulnerability can lead to the introduction of malicious code, compromising your project's integrity and security.

You should uninstall the package immediately and check your project for any unintended consequences from its use.

You can use tools like Vulert, which monitors your package-lock.json for open-source vulnerabilities in real-time.

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 sunderlan-uyilud-vamnauin

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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