Malicious Code Detected in funcconf Package - Security Alert

funcconf Updated 02 Oct 2025

Summary

14/08/2025
CRITICAL
No i
Critical
Not published

MAL-2025-21047: Malicious code in funcconf (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The funcconf package is an npm library designed for configuration management in Node.js applications. It allows developers to manage application settings and configurations easily. However, recent findings have revealed that this package contains malicious code, posing significant security risks to applications that utilize it.

Vulnerability Detail

The funcconf package has been identified to contain malicious code that can compromise the security of applications using it. This vulnerability originated from the package's codebase, which was found to be intentionally crafted to execute harmful actions. The ramifications of this vulnerability can include unauthorized access to sensitive data, data corruption, and potential exploitation of the host system. It is crucial for developers to be aware of this issue to prevent potential security breaches.

How To Fix

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

npm uninstall funcconf

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 can avoid using the funcconf package and manually manage your application's configuration settings. Alternatively, consider using other well-reviewed configuration management packages available in the npm ecosystem.

Conclusion

The funcconf package has been flagged for containing malicious code, which poses a serious security threat to applications that utilize it. Developers are urged to take immediate action to remove the package and seek alternatives to safeguard their applications. Regular monitoring of dependencies using tools like Vulert can help maintain security in your projects.

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FAQ

funcconf is an npm package used for managing configuration settings in Node.js applications.

The funcconf package contains malicious code that can compromise application security.

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

It is advised to remove the funcconf package and replace it with a secure alternative. If a patched version becomes available, update it immediately.

Yes, there are several other configuration management packages available on npm that you can consider using instead of funcconf.

How To Fix

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

npm uninstall funcconf

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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