Malicious Code Detected in @zalastax/nolb-nodejsr Package

@zalastax/nolb-nodejsr Updated 02 Oct 2025

Summary

14/08/2025
CRITICAL
No i
Critical
Not published

MAL-2025-12777: Malicious code in @zalastax/nolb-nodejsr (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The @zalastax/nolb-nodejsr package is an npm library designed for Node.js applications, providing functionalities that may include load balancing and network operations. However, it has been identified to contain malicious code, posing significant risks to users who integrate it into their projects. This vulnerability can lead to unauthorized access or manipulation of application data.

Vulnerability Detail

The vulnerability originates from the inclusion of malicious code within the @zalastax/nolb-nodejsr package. This code can compromise the security of applications utilizing this package, potentially allowing attackers to execute harmful actions such as data theft or system manipulation. The malicious nature of the code makes it imperative for users to take immediate action to mitigate risks.

How To Fix

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

npm uninstall @zalastax/nolb-nodejsr

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 @zalastax/nolb-nodejsr package from your project by executing: npm uninstall @zalastax/nolb-nodejsr. This will prevent the execution of the malicious code until a secure version is available.

Conclusion

The @zalastax/nolb-nodejsr package has been identified to contain malicious code, posing significant security risks. Users are urged to take immediate action by uninstalling the package and monitoring for any updates. Utilizing tools like Vulert can help in identifying vulnerabilities in your applications.

See every vulnerability recorded for @zalastax/nolb-nodejsr →

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FAQ

The malicious code can compromise application security, leading to unauthorized access and potential data breaches.

You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time. Visit Vulert Scanner to check if your application is affected without requiring any signup.

Currently, there is no specific patched version available. Users are advised to uninstall the package until a secure version is released.

You should immediately uninstall the package and monitor for updates regarding a secure version.

It is highly discouraged to continue using the package due to the potential risks associated with the malicious code.

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 @zalastax/nolb-nodejsr

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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