Malicious Code Detected in react-sitecore-library: A Critical Vulnerability

react-sitecore-library Updated 16 Jan 2026

Summary

16/01/2026
CRITICAL
No i
Critical
Not published

MAL-2026-301: Malicious code in react-sitecore-library (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The react-sitecore-library is an npm package designed to facilitate the integration of Sitecore with React applications. It provides developers with tools and components that streamline the development process. However, this package has been identified as containing malicious code, posing significant risks to applications that utilize it.

Vulnerability Detail

The vulnerability stems from the presence of malicious code within the react-sitecore-library package. This code can potentially compromise the security of applications that depend on this library, leading to unauthorized access, data breaches, or other malicious activities. The issue was identified by Amazon Inspector, which reported the package's integrity as compromised.

How To Fix

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

npm uninstall react-sitecore-library

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 react-sitecore-library from your project until a secure version is released. You can do this by running the command: npm uninstall react-sitecore-library.

Conclusion

The discovery of malicious code in the react-sitecore-library package highlights the importance of regularly monitoring and updating dependencies in software projects. By taking proactive measures, such as using tools like Vulert and keeping packages up to date, developers can mitigate risks associated with vulnerabilities.

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FAQ

The react-sitecore-library is an npm package that helps developers integrate Sitecore with React applications, providing useful components and tools.

The specific details of the malicious code have not been disclosed, but it poses risks such as unauthorized access and potential data breaches.

You can use Vulert, which monitors open-source vulnerabilities in your software. By uploading your package-lock.json file, you can receive real-time alerts about vulnerabilities.

Yes, Vulert allows you to monitor vulnerabilities using just your package-lock.json file, making it easy to stay informed without additional installations.

If immediate updates are not possible, consider removing the package from your project as a temporary workaround until a secure version is available.

How To Fix

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

npm uninstall react-sitecore-library

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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