Malicious Code Detected in @zalastax/nolb-react-ue Package

@zalastax/nolb-react-ue Updated 02 Oct 2025

Summary

14/08/2025
CRITICAL
No i
Critical
Not published

MAL-2025-13829: Malicious code in @zalastax/nolb-react-ue (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The @zalastax/nolb-react-ue package is an npm library designed for React applications, providing utility functions and components for user interface development. It is utilized by developers to enhance their applications with reusable components. However, this package has been identified to contain malicious code, posing a significant risk to users who integrate it into their projects.

Vulnerability Detail

The vulnerability arises from the inclusion of malicious code within the @zalastax/nolb-react-ue package. This code can potentially compromise the security of applications that utilize this package, leading to unauthorized access, data breaches, or other harmful actions. The malicious nature of the code was discovered by Amazon Inspector, indicating a serious threat to developers and users relying on this package.

How To Fix

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

npm uninstall @zalastax/nolb-react-ue

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, consider removing the @zalastax/nolb-react-ue package from your project and replacing it with an alternative library that provides similar functionality without the associated risks.

Conclusion

The discovery of malicious code in the @zalastax/nolb-react-ue package poses a serious threat to developers and users. It is crucial to take immediate action by removing the package and seeking alternatives. Utilizing tools like Vulert can help in monitoring and managing open-source vulnerabilities effectively.

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FAQ

The malicious code can perform unauthorized actions within applications, potentially leading to data theft or system compromise.

You can use Vulert, a tool that monitors and alerts for open-source vulnerabilities in real-time. By analyzing your package-lock.json file, Vulert can help identify if your application is affected.

Yes, you can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without any signup.

Immediately remove the @zalastax/nolb-react-ue package from your project and look for alternative libraries that offer similar features.

Currently, there is no information regarding a patch. It is advisable to monitor the package repository for any updates or announcements.

How To Fix

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

npm uninstall @zalastax/nolb-react-ue

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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