Malicious Code Detected in fakearray Package - Security Alert

fakearray Updated 02 Oct 2025

Summary

14/08/2025
CRITICAL
No i
Critical
Not published

MAL-2025-20179: Malicious code in fakearray (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The fakearray package is an npm library designed to provide a fake array generator for testing and development purposes. It is commonly used in JavaScript applications to simulate array behavior without relying on actual data. However, recent findings have revealed that this package contains malicious code, posing a significant security risk to applications that utilize it.

Vulnerability Detail

The vulnerability in the fakearray package stems from the inclusion of malicious code that can compromise the security of applications using this library. This code can potentially lead to unauthorized access, data breaches, or other harmful actions within the affected systems. The malicious nature of the code was identified by Amazon Inspector, highlighting the importance of scrutinizing third-party packages for security threats.

How To Fix

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

npm uninstall fakearray

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 replacing the fakearray package with an alternative library that provides similar functionality without the associated risks. Review your project's dependencies and ensure that any replacements are well-maintained and trusted.

Conclusion

The discovery of malicious code in the fakearray package poses a serious threat to applications that utilize it. It is essential for developers to take immediate action by uninstalling the package and considering alternative solutions. Regularly monitoring dependencies and utilizing tools like Vulert can help maintain the security of your applications.

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FAQ

The fakearray package is an npm library used to generate fake arrays for testing and development purposes in JavaScript applications.

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

You can use Vulert, which monitors and alerts for open-source vulnerabilities in your software. By simply analyzing your package-lock.json file, Vulert can provide real-time alerts. You can also check your application using the Vulert playground without any signup.

If you have used fakearray in your project, it is crucial to uninstall the package immediately and replace it with a secure alternative.

Currently, there is no patched version available for fakearray. It is recommended to uninstall the package until a secure version is released.

How To Fix

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

npm uninstall fakearray

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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