Malicious Code Detected in checkout_queue Package - Security Alert

checkout_queue Updated 02 Oct 2025

Summary

14/08/2025
CRITICAL
No i
Critical
Not published

MAL-2025-16885: Malicious code in checkout_queue (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The checkout_queue package is an npm library designed to facilitate queue management in applications. It provides functionalities for handling tasks in a sequential manner, making it a popular choice among developers for managing asynchronous operations. However, recent findings have revealed that this package contains malicious code, posing significant security risks to applications that utilize it.

Vulnerability Detail

The vulnerability in the checkout_queue package stems 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 disrupt normal application functionality. The malicious nature of this code was identified by security researchers, highlighting the importance of scrutinizing third-party packages for potential threats.

How To Fix

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

npm uninstall checkout_queue

If it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.

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Workaround

As a temporary workaround, consider removing the checkout_queue package from your project and replacing it with an alternative library that offers similar functionality without the associated security risks. You can also implement custom queue management logic to avoid using this vulnerable package.

Conclusion

The discovery of malicious code in the checkout_queue package underscores the importance of vigilance when using third-party libraries. Developers are urged to update their dependencies promptly and consider using tools like Vulert for ongoing vulnerability monitoring.

See every vulnerability recorded for checkout_queue →

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FAQ

checkout_queue is an npm package used for managing task queues in applications, allowing developers to handle asynchronous operations efficiently.

The malicious code found in the checkout_queue package can potentially allow unauthorized access to sensitive data and disrupt application functionality.

You can use Vulert, a tool that monitors and alerts for open-source vulnerabilities in your software. By analyzing your package-lock.json file, Vulert can help identify if your application is impacted by this vulnerability.

Yes, Vulert provides real-time monitoring for open-source vulnerabilities without requiring code access or installation. You can check your application's status using the Vulert playground.

If immediate updates are not feasible, consider removing the checkout_queue package and using alternative libraries or custom implementations for queue management.

How To Fix

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

npm uninstall checkout_queue

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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