Malicious Code Detected in comstrap Package - Security Alert

comstrap Updated 16 Jan 2026

Summary

16/01/2026
CRITICAL
No i
Critical
Not published

MAL-2026-278: Malicious code in comstrap (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The comstrap package is a tool used in the npm ecosystem for managing and creating scripts. It is designed to streamline the development process by providing a set of utilities for developers. However, recent findings have revealed that this package contains malicious code, posing significant security risks to applications that utilize it.

Vulnerability Detail

The vulnerability stems from the discovery of malicious code embedded within the comstrap package. This code can potentially compromise the integrity of applications that depend on it, leading to unauthorized access, data breaches, or other malicious activities. The issue was identified by Amazon Inspector, which flagged the package for containing harmful components that could exploit users' systems.

How To Fix

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

npm uninstall comstrap

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, consider removing the comstrap package from your project until a secure version is available. You can do this by executing the following command: npm uninstall comstrap.

Conclusion

The discovery of malicious code in the comstrap package highlights the importance of regularly monitoring and updating dependencies in software projects. By following the recommended steps to update or remove the package, developers can protect their applications from potential threats.

See every vulnerability recorded for comstrap →

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FAQ

comstrap is an npm package designed to assist developers in managing scripts and automating tasks within their applications.

The malicious code was identified by Amazon Inspector, a security tool that scans packages for vulnerabilities and harmful components.

Using the compromised package can lead to security breaches, unauthorized access to sensitive data, and potential damage to your application.

Yes, it is recommended to update the comstrap package to the latest version to mitigate the risks associated with the malicious code.

You can use Vulert, a tool that monitors and alerts for open-source vulnerabilities in real-time. It requires only the package-lock.json file to function effectively.

How To Fix

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

npm uninstall comstrap

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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