Malicious Code Injection in udin-soto41-breki: A Threat to npm Packages

udin-soto41-breki Updated 24 Nov 2025

Summary

11/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-75842: Malicious code in udin-soto41-breki (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The package 'udin-soto41-breki' is part of a series of npm packages that emerged during the tea.xyz token reward campaign. These packages are designed to automate the generation and publication of derivative packages with randomized names, aimed at inflating developer reputation scores for token rewards. The malicious nature of this package lies in its ability to modify critical files and republish variants, thus polluting the npm registry.

Vulnerability Detail

The vulnerability in 'udin-soto41-breki' originates from its association with a malicious campaign that utilizes autopublish scripts to alter the package.json file. This includes removing private flags, changing version numbers, and generating random package names. The continuous republishing of these variants can lead to a polluted npm registry, making it difficult for developers to find legitimate packages and potentially compromising their projects with malicious code.

How To Fix

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

npm uninstall udin-soto41-breki

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 workaround, you can remove the 'udin-soto41-breki' package from your project by executing: 'npm uninstall udin-soto41-breki'. This will prevent any malicious code from executing while you seek a secure alternative or wait for a patched version.

Conclusion

The 'udin-soto41-breki' package poses a significant risk due to its malicious code that alters package files and repopulates the npm registry with harmful variants. It is crucial for developers to monitor their dependencies, update to secure versions, and utilize tools like Vulert to ensure their projects remain safe from such vulnerabilities.

See every vulnerability recorded for udin-soto41-breki →

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FAQ

The primary risk is the injection of malicious code that modifies package files and republish variants, leading to potential security breaches.

You can check your package.json or package-lock.json files for any references to 'udin-soto41-breki'.

You should uninstall the package immediately and look for a secure alternative or update to a patched version if available.

Yes, Vulert can monitor your package-lock.json for open-source vulnerabilities in real-time without requiring code access or installation.

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 udin-soto41-breki

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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