Malicious Code Injection in uarg-mtuhai-suf Package

uarg-mtuhai-suf Updated 26 Nov 2025

Summary

12/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-169611: Malicious code in uarg-mtuhai-suf (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The uarg-mtuhai-suf package is part of the npm ecosystem, often used for various JavaScript functionalities. However, it has been identified as part of a malicious campaign that exploits npm's publishing features. This package is involved in generating and publishing derivative packages with the intent of inflating developer reputation scores for token rewards, making it a target for developers and users alike.

Vulnerability Detail

The vulnerability in the uarg-mtuhai-suf package stems from its malicious code designed to modify the package.json file. This code removes private flags, alters version numbers, and generates random package names, leading to the continuous republishing of these variants. This behavior not only pollutes the npm registry but also poses a risk to developers who may unknowingly use these compromised packages, potentially leading to security breaches and loss of reputation.

How To Fix

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

npm uninstall uarg-mtuhai-suf

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, avoid using the uarg-mtuhai-suf package and any packages that may depend on it. You can also use tools like Vulert to monitor your package-lock.json for vulnerabilities. To check if your application is affected by this vulnerability, visit the Vulert playground at https://vulert.com/scanner without requiring any signup.

Conclusion

The uarg-mtuhai-suf package poses a significant risk due to its malicious code that modifies package configurations and republish variants. It is crucial for developers to remove this package from their projects and utilize monitoring tools like Vulert to stay informed about potential vulnerabilities.

See every vulnerability recorded for uarg-mtuhai-suf →

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FAQ

uarg-mtuhai-suf is an npm package that has been identified as part of a malicious campaign to inflate developer reputation scores through the automatic generation of derivative packages.

The vulnerability can lead to the introduction of malicious code into your application, potentially compromising its security and integrity.

You should uninstall the uarg-mtuhai-suf package immediately and check for any dependencies that may be affected.

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 for vulnerabilities in your application without requiring any signup.

How To Fix

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

npm uninstall uarg-mtuhai-suf

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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