Critical Malicious Code Vulnerability in z-shop-event-bus Package

z-shop-event-bus Updated 06 Feb 2026

Summary

04/02/2026
CRITICAL
No i
Critical
Not published

MAL-2026-726: Malicious code in z-shop-event-bus (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The z-shop-event-bus package is an npm library designed for managing event-driven architectures in JavaScript applications. It facilitates the communication between different components of an application through events, making it easier to build scalable and responsive systems. However, this package has been found to contain malicious code that compromises the security of any system using it.

Vulnerability Detail

The vulnerability originates from the presence of embedded malicious code within the z-shop-event-bus package. This code can lead to a complete compromise of any computer that has the package installed or running. The ramifications include unauthorized access to sensitive information, such as secrets and keys, stored on the affected system. Users are advised to treat any system with this package as fully compromised and to take immediate action to secure their data.

How To Fix

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

npm uninstall z-shop-event-bus

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, it is recommended to immediately rotate all secrets and keys stored on the affected computer from a different, secure machine. Additionally, consider using alternative packages that provide similar functionality without the associated risks.

Conclusion

The z-shop-event-bus package has been identified as containing malicious code, posing significant security risks to any system using it. Immediate action is required to remove the package and secure sensitive information. Utilizing tools like Vulert can help in monitoring and managing vulnerabilities in your software dependencies.

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FAQ

You should remove the z-shop-event-bus package immediately and rotate any sensitive information stored on the affected system.

You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time. Visit Vulert Scanner to check your application without any signup.

Failing to address this vulnerability can lead to unauthorized access to your system, data breaches, and potential exploitation of sensitive information.

The best mitigation strategy is to remove the package entirely and use alternative solutions that do not pose security risks.

Regularly check for updates in your dependencies and consider using tools like Vulert to monitor for vulnerabilities in real-time.

How To Fix

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

npm uninstall z-shop-event-bus

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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