Malicious Code Injection in nextjs-shelljs-centaurus-singularity Package

Summary

13/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-188269: Malicious code in nextjs-shelljs-centaurus-singularity (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The nextjs-shelljs-centaurus-singularity package is part of the npm ecosystem and is typically used in JavaScript applications. It is designed to facilitate shell scripting within Next.js applications. However, this package has been identified as part of a malicious campaign that floods the npm registry with harmful scripts aimed at manipulating developer reputation scores through automated publishing.

Vulnerability Detail

The vulnerability in the nextjs-shelljs-centaurus-singularity package stems from its association with a malicious campaign that modifies the package.json file to remove private flags, alters version numbers, and generates random package names. This behavior is intended to inflate developer reputation scores for token rewards, leading to potential pollution of the npm registry and compromising the integrity of the software supply chain.

How To Fix

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

npm uninstall nextjs-shelljs-centaurus-singularity

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 nextjs-shelljs-centaurus-singularity package from your project if it is not essential. Use the following command to uninstall it: npm uninstall nextjs-shelljs-centaurus-singularity. This will prevent any malicious code from executing in your application.

Conclusion

The nextjs-shelljs-centaurus-singularity package has been identified as containing malicious code that can compromise your application. It is crucial to take immediate action by updating or uninstalling the package to protect your software environment. Utilizing tools like Vulert can help you stay informed about vulnerabilities in your dependencies.

See every vulnerability recorded for nextjs-shelljs-centaurus-singularity →

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FAQ

It is an npm package used for shell scripting within Next.js applications, but it has been compromised with malicious code.

The vulnerability can lead to unauthorized modifications of your package.json file and may compromise the integrity of your application by introducing malicious scripts.

You should immediately update the package to a patched version or uninstall it to mitigate the risk of exploitation.

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

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 nextjs-shelljs-centaurus-singularity

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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