Malicious Code Detected in @zalastax/nolb-pass Package - Immediate Action Required

@zalastax/nolb-pass Updated 02 Oct 2025

Summary

14/08/2025
CRITICAL
No i
Critical
Not published

MAL-2025-13043: Malicious code in @zalastax/nolb-pass (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The @zalastax/nolb-pass package is an npm library designed for specific functionalities within JavaScript applications. It is utilized by developers for its ease of integration and utility. However, recent findings have revealed that this package contains malicious code, posing significant security risks to applications that depend on it.

Vulnerability Detail

The vulnerability stems from the presence of malicious code within the @zalastax/nolb-pass package. This code can potentially compromise the integrity of applications using the package, leading to unauthorized access, data breaches, or other malicious activities. The issue was identified by Amazon Inspector, which flagged the package as containing harmful elements that could exploit vulnerabilities in dependent applications.

How To Fix

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

npm uninstall @zalastax/nolb-pass

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 may consider removing the @zalastax/nolb-pass package from your project until a secure version is released. You can do this by executing the command: 'npm uninstall @zalastax/nolb-pass'. This will prevent any potential exploitation of the malicious code until a fix is available.

Conclusion

The discovery of malicious code in the @zalastax/nolb-pass package highlights the importance of regularly monitoring and updating dependencies in software projects. Developers should take immediate action to either update or remove the affected package to safeguard their applications from potential threats.

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

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FAQ

The malicious code can lead to unauthorized access and potential data breaches in applications that utilize the package.

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

Currently, there is no specific patch version mentioned. It is advisable to monitor the package for updates and apply them as soon as they are available.

If immediate updates are not feasible, consider removing the package temporarily to mitigate risks until a secure version is released.

The vulnerability was identified by Amazon Inspector, a security tool that helps detect malicious packages.

How To Fix

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

npm uninstall @zalastax/nolb-pass

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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