Critical Malicious Code Vulnerability in fucoin Package

fucoin Updated 02 Oct 2025

Summary

14/08/2025
CRITICAL
No i
Critical
Not published

MAL-2025-21028: Malicious code in fucoin (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The fucoin package is an npm library designed for cryptocurrency transactions and related functionalities. It is utilized by developers to integrate digital currency features into their applications. However, this package has been identified as containing malicious code, posing significant risks to users and their applications.

Vulnerability Detail

The vulnerability in the fucoin package originates from the inclusion of malicious code that can compromise the integrity and security of applications using this library. This code can lead to unauthorized access, data breaches, and potential exploitation of user systems. The malicious nature of this code makes it imperative for developers to address this vulnerability promptly to safeguard their applications and users.

How To Fix

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

npm uninstall fucoin

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, developers can remove the fucoin package from their projects until a secure version is released. This can be done by executing the command: 'npm uninstall fucoin'. Additionally, consider using alternative packages that provide similar functionality without the associated risks.

Conclusion

The discovery of malicious code in the fucoin package highlights the importance of vigilance in managing open-source dependencies. Developers are urged to take immediate action to protect their applications and users by updating or removing the affected package.

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FAQ

fucoin is an npm package designed for cryptocurrency transactions and related functionalities.

The malicious code can lead to unauthorized access and exploitation of user systems.

You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time. Check your application using the Vulert playground at Vulert Scanner.

Currently, there is no patched version available. Users should monitor the package repository for updates.

Consider uninstalling the fucoin package and using alternative libraries 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 fucoin

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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