Critical Malicious Code Vulnerability in epxress Package

epxress Updated 02 Oct 2025

Summary

14/08/2025
CRITICAL
No i
Critical
Not published

MAL-2025-19728: Malicious code in epxress (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The epxress package is a web framework for building web applications and APIs in Node.js. It is designed to facilitate the development of server-side applications by providing a robust set of features for web and mobile applications. However, the package has been identified to contain malicious code, posing significant security risks to applications that utilize it.

Vulnerability Detail

The epxress package has been found to contain malicious code that could compromise the security of applications using it. This vulnerability originates from the package itself, which was likely tampered with to introduce harmful functionalities. The ramifications include unauthorized access to sensitive data, potential data breaches, and exploitation of the affected applications. It is crucial for developers to be aware of this vulnerability to protect their applications from malicious attacks.

How To Fix

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

npm uninstall epxress

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 prevent the use of the epxress package in your application by removing it from your dependencies and replacing it with a different, secure package. For example, you can use the express package, which is a well-maintained and widely used alternative. To do this, run the following command: npm uninstall epxress && npm install express.

Conclusion

The epxress package contains a critical vulnerability due to the presence of malicious code. Developers are urged to remove this package from their applications and replace it with a secure alternative to safeguard their projects. Regular monitoring for vulnerabilities using tools like Vulert is recommended to maintain application security.

See every vulnerability recorded for epxress →

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FAQ

The epxress package is a web framework for Node.js that simplifies the process of building web applications and APIs.

The malicious code can lead to unauthorized access and exploitation of applications that use the epxress package.

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

Remove the epxress package and replace it with a secure alternative like the express package. Ensure to update your code accordingly.

Currently, there is no patched version available for epxress. It is advisable to remove it and use a different package.

How To Fix

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

npm uninstall epxress

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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