Critical Malicious Code Vulnerability in sidebar-basket Package

sidebar-basket Updated 23 Mar 2026

Summary

23/03/2026
CRITICAL
No i
Critical
Not published

MAL-2026-2101: Malicious code in sidebar-basket (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The sidebar-basket package is an npm library designed for managing and displaying a shopping basket in web applications. It provides functionalities such as adding, removing, and viewing items in a basket. However, this package has been compromised, leading to severe security risks for any application that utilizes it.

Vulnerability Detail

The vulnerability originates from the inclusion of malicious code within the sidebar-basket package. This code can fully compromise any computer that has the package installed, allowing unauthorized access to sensitive information such as secrets and keys. The malicious nature of the code is classified under CWE-506, indicating that it contains embedded malicious code. Users are advised to treat any system running this package as compromised.

How To Fix

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

npm uninstall sidebar-basket

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, if you need to maintain functionality similar to sidebar-basket, consider using alternative packages that provide similar features without the security risks. Always ensure to review the package's security history before installation.

Conclusion

The sidebar-basket package has been identified as containing malicious code that poses significant security risks. Immediate action is required to remove the package and secure any compromised systems. Utilizing tools like Vulert can help in monitoring for such vulnerabilities in the future.

See every vulnerability recorded for sidebar-basket →

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FAQ

Immediately remove the sidebar-basket package from your project and consider your system compromised.

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

Failing to address this vulnerability can lead to unauthorized access to sensitive data and complete control of your system by malicious actors.

Rotate all secrets and keys stored on the affected system from a secure environment and remove the malicious package.

Regularly monitor your dependencies for vulnerabilities using tools like Vulert and ensure to review the security history of packages before installation.

How To Fix

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

npm uninstall sidebar-basket

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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