Malicious Code Detected in @zalastax/nolb-react-si: A Security Alert

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

Summary

14/08/2025
CRITICAL
No i
Critical
Not published

MAL-2025-13764: Malicious code in @zalastax/nolb-react-si (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The package @zalastax/nolb-react-si is an npm library designed for React applications, providing specific functionalities that enhance user interfaces. However, it has been identified as containing malicious code, which poses significant security risks to applications that utilize this package. The presence of such code can lead to unauthorized access, data breaches, or other harmful actions within the application.

Vulnerability Detail

The vulnerability stems from the inclusion of malicious code within the @zalastax/nolb-react-si package. This code can execute harmful operations without the user's consent, potentially compromising sensitive data and application integrity. The malicious nature of this vulnerability makes it critical for developers to address it immediately to prevent exploitation.

How To Fix

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

npm uninstall @zalastax/nolb-react-si

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, you can avoid using the @zalastax/nolb-react-si package until a secure version is released. Consider using alternative packages that provide similar functionalities without the associated risks.

Conclusion

The discovery of malicious code in the @zalastax/nolb-react-si package highlights the importance of vigilance in managing open-source dependencies. Developers are urged to take immediate action to mitigate risks associated with this vulnerability by uninstalling the package and monitoring for updates.

See every vulnerability recorded for @zalastax/nolb-react-si →

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FAQ

The malicious code can perform unauthorized actions within applications, potentially leading to data breaches or other security incidents.

You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time. Visit Vulert Scanner to check your application without needing to sign up.

Immediately uninstall the package using 'npm uninstall @zalastax/nolb-react-si' and look for alternative solutions or wait for a secure version.

While specific exploits have not been detailed, the presence of malicious code indicates a high risk of exploitation, making it crucial to act swiftly.

Utilize tools like Vulert to monitor your dependencies for vulnerabilities in real-time, ensuring you are alerted to any potential risks.

How To Fix

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

npm uninstall @zalastax/nolb-react-si

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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