Malicious Code Injection in jurss-sdfudd-as Package: A Threat to npm Users

jurss-sdfudd-as Updated 26 Nov 2025

Summary

12/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-157211: Malicious code in jurss-sdfudd-as (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The jurss-sdfudd-as package is part of a broader campaign targeting npm users, primarily associated with the tea.xyz token reward initiative. This package is designed to automate the generation and publication of derivative packages, which can mislead developers and inflate reputation scores within the npm ecosystem. Its functionality, while seemingly innocuous, is compromised by malicious scripts that alter package metadata.

Vulnerability Detail

The vulnerability stems from the presence of malicious code within the jurss-sdfudd-as package, which is linked to a campaign that floods the npm registry with derivative packages. The malicious payload modifies the package.json file by removing private flags, altering version numbers, and generating random package names. This behavior not only pollutes the npm registry but also poses a risk to developers who may unknowingly use these compromised packages, leading to potential security breaches and loss of trust in the npm ecosystem.

How To Fix

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

npm uninstall jurss-sdfudd-as

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 avoid using the jurss-sdfudd-as package and monitor your project for any instances of this package being installed. You can also use the following command to uninstall it if it is already present: npm uninstall jurss-sdfudd-as.

Conclusion

The jurss-sdfudd-as package poses a significant threat to npm users due to its malicious code that alters package metadata and floods the registry with compromised packages. It is crucial to remove this package from your projects and utilize tools like Vulert to monitor for vulnerabilities effectively.

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FAQ

The jurss-sdfudd-as package is part of a malicious campaign that aims to inflate developer reputation scores by flooding the npm registry with derivative packages.

The malicious code modifies your package.json file, potentially exposing your project to security risks and affecting the integrity of your dependencies.

You can use Vulert to monitor and alert for open-source vulnerabilities in your software. Visit Vulert Scanner to check if your application is affected without needing to sign up.

If you have installed the jurss-sdfudd-as package, it is advisable to uninstall it immediately using the command: npm uninstall jurss-sdfudd-as.

Yes, tools like Vulert can help you monitor your dependencies for vulnerabilities in real-time, ensuring your project remains secure.

How To Fix

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

npm uninstall jurss-sdfudd-as

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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