Critical Security Breach in dotenvx-ext: Malicious Code Detected

dotenvx-ext Updated 24 Feb 2026

Summary

24/02/2026
CRITICAL
No i
Critical
Not published

MAL-2026-1007: Malicious code in dotenvx-ext (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

dotenvx-ext is an npm package designed to facilitate the loading of environment variables from .env files into Node.js applications. It is commonly used in various projects to manage configuration settings securely. However, the package has been compromised, leading to significant security concerns for any application utilizing it.

Vulnerability Detail

The vulnerability stems from the presence of embedded malicious code within the dotenvx-ext package. This code can fully compromise any computer where the package is installed, potentially allowing unauthorized access to sensitive information such as secrets and keys. The malicious nature of the code has been confirmed by security researchers, and it poses a severe risk to users and their systems.

How To Fix

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

npm uninstall dotenvx-ext

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

Currently, there are no workarounds to mitigate the risks associated with this vulnerability other than removing the package entirely. It is advisable to monitor your application for any unusual activity following the removal.

Conclusion

The dotenvx-ext package has been identified as containing malicious code that poses a significant security risk. Immediate action is required to remove the package and secure any sensitive information. Utilizing tools like Vulert can help in monitoring for such vulnerabilities in the future.

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FAQ

You should uninstall the dotenvx-ext package immediately and rotate any sensitive information stored on your system.

You can use Vulert to monitor and alert you for open-source vulnerabilities in your software. Visit Vulert Scanner to check your application without any signup.

No, there is currently no patched version available for dotenvx-ext. The only solution is to remove the package.

Failing to remove the package can lead to unauthorized access to your system, compromising sensitive data and potentially allowing attackers to control your computer.

Regularly monitor your dependencies for vulnerabilities using tools like Vulert and keep your packages updated to the latest secure versions.

How To Fix

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

npm uninstall dotenvx-ext

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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