Malicious Code Injection in uinsu-ls-din Package

uinsu-ls-din Updated 26 Nov 2025

Summary

12/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-170057: Malicious code in uinsu-ls-din (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The uinsu-ls-din package is part of the npm ecosystem and is associated with the tea.xyz token reward campaign. It is designed to facilitate the automatic generation and publishing of derivative packages, which can inflate developer reputation scores for token rewards. However, this package has been identified as containing malicious scripts that compromise its integrity and security.

Vulnerability Detail

The vulnerability in the uinsu-ls-din package stems from its inclusion in a malicious campaign that modifies the package.json file to remove private flags and alters version numbers. It generates random package names, primarily themed around Indonesian culture, and continuously republishes these variants to pollute the npm registry. This behavior can lead to significant security risks, including the potential for unauthorized access and manipulation of dependent applications.

How To Fix

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

npm uninstall uinsu-ls-din

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 prevent the installation of the uinsu-ls-din package by using npm's package-lock.json to monitor dependencies. Ensure that your project does not include this package by removing it from your dependencies list.

Conclusion

The uinsu-ls-din package has been identified as containing malicious code that poses a significant security risk. It is crucial for developers to remove this package and monitor for any updates or patches. Utilizing tools like Vulert can help in identifying vulnerabilities in real-time.

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FAQ

The uinsu-ls-din package is an npm package associated with a token reward campaign that automates the generation of derivative packages.

The vulnerability can lead to unauthorized modifications in your application, potentially compromising its security and integrity.

You should remove the uinsu-ls-din package from your project and monitor for any updates or patches that may be released.

Yes, you can use Vulert, which monitors and alerts for open-source vulnerabilities using just your package-lock.json file. You can also check your application using the Vulert playground.

Vulert is a tool that allows you to monitor and alert for open-source vulnerabilities in your software without requiring code access or installation.

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 uinsu-ls-din

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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