Malicious Code Detected in env-variables-extension Package

env-variables-extension Updated 02 Oct 2025

Summary

14/08/2025
CRITICAL
No i
Critical
Not published

MAL-2025-19679: Malicious code in env-variables-extension (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The env-variables-extension package is an npm library designed to facilitate the management of environment variables in JavaScript applications. It allows developers to easily set and retrieve environment variables, enhancing the configuration process of applications. However, this package has been identified to contain malicious code, posing a significant risk to users who integrate it into their projects.

Vulnerability Detail

The vulnerability in the env-variables-extension package stems from the inclusion of malicious code that can compromise the security of applications utilizing this library. This code may lead to unauthorized access, data breaches, or other malicious activities. The issue was introduced in version 0 and affects all subsequent versions, making it imperative for users to take immediate action to protect their applications.

How To Fix

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

npm uninstall env-variables-extension

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 workaround, consider using alternative packages for managing environment variables, such as dotenv or config. These packages are widely used and have a strong reputation for security. You can install dotenv using the following command: npm install dotenv.

Conclusion

The env-variables-extension package has been identified to contain malicious code, posing a serious threat to applications that utilize it. Users are strongly advised to remove this package and consider secure alternatives. Tools like Vulert can assist in monitoring and alerting for vulnerabilities in real-time, ensuring the safety of your software.

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FAQ

The env-variables-extension package is an npm library that helps developers manage environment variables in their applications.

The malicious code can lead to unauthorized access and potential data breaches, compromising the security of applications using the package.

You can use Vulert, which monitors open-source vulnerabilities in real-time. By analyzing your package-lock.json file, Vulert can alert you to any vulnerabilities, including this one.

While the best course of action is to remove the package, you can look for alternative libraries that provide similar functionality without the associated risks.

You can visit Vulert's playground at Vulert Scanner to check if your application is affected by known vulnerabilities without needing to sign up.

How To Fix

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

npm uninstall env-variables-extension

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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