Malicious Code Vulnerability in fe-lib-singleton Package
Summary
MAL-2026-1736: Malicious code in fe-lib-singleton (npm). Affects fe-lib-singleton versions 99.99.9 – 999.999.999. No fix is published. How to fix ↓
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Background
The fe-lib-singleton package is a JavaScript library available through npm, designed to implement the singleton design pattern, ensuring that a class has only one instance and providing a global point of access to it. This package is commonly used in web development to manage shared resources efficiently. However, it has been identified as containing malicious code, which poses significant security risks to applications that utilize it.
Vulnerability Detail
The vulnerability in the fe-lib-singleton package arises from the inclusion of malicious code that can compromise the security of applications using this library. This code may allow unauthorized access to sensitive data, execute arbitrary commands, or facilitate other malicious activities. The affected versions include 99.99.9, 99.99.99, and 999.999.999, and it was reported by ReversingLabs, highlighting the need for immediate attention from developers using this package.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall fe-lib-singletonIf 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 remove the fe-lib-singleton package from your project until a secure version is released. This can be done using the command: npm uninstall fe-lib-singleton. Consider using alternative libraries that provide similar functionality without the associated risks.
Conclusion
The fe-lib-singleton package has been identified as containing malicious code, posing significant security risks to applications. Developers are urged to update to a secure version or consider alternative solutions to mitigate potential threats. Utilizing tools like Vulert can help monitor and manage vulnerabilities effectively.
See every vulnerability recorded for fe-lib-singleton →
FAQ
The fe-lib-singleton package is a JavaScript library that implements the singleton design pattern, ensuring a single instance of a class throughout an application.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time. By checking your package-lock.json file, you can determine if your application is affected. Visit the Vulert playground at Vulert Scanner for a quick check without signup.
If an immediate update is not possible, consider removing the fe-lib-singleton package and using alternative libraries that do not have known vulnerabilities.
Using the affected versions can lead to unauthorized access, data breaches, and potential exploitation of your application by malicious actors.
The vulnerability was reported by ReversingLabs, a cybersecurity firm specializing in threat detection and analysis.
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