Malicious Code Detected in cross-env-blitz-bunyan-stream Package

Summary

14/08/2025
CRITICAL
No i
Critical
Not published

MAL-2025-17700: Malicious code in cross-env-blitz-bunyan-stream (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The cross-env-blitz-bunyan-stream package is an npm module designed to facilitate the use of environment variables in Node.js applications. It allows developers to set environment variables in a cross-platform manner, ensuring that applications run smoothly across different operating systems. However, this package has been found to contain malicious code, posing a significant risk to users who integrate it into their projects.

Vulnerability Detail

The vulnerability in the cross-env-blitz-bunyan-stream package originates from the inclusion of malicious code that can compromise the security of applications utilizing this package. This malicious code may lead to unauthorized access, data breaches, or other harmful actions within the affected systems. Users of this package are at risk of having their applications manipulated or their data exposed due to this vulnerability.

How To Fix

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

npm uninstall cross-env-blitz-bunyan-stream

If it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.

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Workaround

As a temporary workaround, you can avoid using the cross-env-blitz-bunyan-stream package altogether and consider alternative packages that provide similar functionality without the associated risks. Always ensure to review the security status of any package before integrating it into your project.

Conclusion

The discovery of malicious code in the cross-env-blitz-bunyan-stream package highlights the importance of vigilance when using open-source software. Users are urged to remove this package and consider alternatives to safeguard their applications. Regular monitoring for vulnerabilities is essential to maintain security.

See every vulnerability recorded for cross-env-blitz-bunyan-stream →

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FAQ

It is an npm package that helps developers manage environment variables in a cross-platform way for Node.js applications.

The malicious code was identified by security researchers from Amazon Inspector during routine checks of open-source packages.

Using this package can lead to unauthorized access to your application, data breaches, and other security vulnerabilities.

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

Immediately uninstall the package and consider using alternative solutions. Regularly monitor your dependencies for vulnerabilities.

How To Fix

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

npm uninstall cross-env-blitz-bunyan-stream

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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