Critical Malicious Code Vulnerability in @emerald-react/app-header Package
Summary
MAL-2026-1596: Malicious code in @emerald-react/app-header (npm). Affects @emerald-react/app-header versions 999.999.999 – 9999.9999.9999. No fix is published. How to fix ↓
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Background
The @emerald-react/app-header package is a component library designed for building user interfaces in React applications. It provides reusable UI components that enhance the development process by offering pre-built elements that are customizable and easy to integrate. However, this package has been identified to contain malicious code, posing significant security risks to applications that utilize it.
Vulnerability Detail
The vulnerability in the @emerald-react/app-header package stems from the inclusion of malicious code that can compromise the security of applications using this library. This code may lead to unauthorized access, data breaches, or other malicious activities. The issue was reported by ReversingLabs, highlighting that specific versions of the package (999.999.999 and 9999.9999.9999) are affected. Users of this package should be aware of the potential ramifications, including the risk of data loss and exploitation of application vulnerabilities.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall @emerald-react/app-headerIf 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 @emerald-react/app-header package from your project until a secure version is released. You can do this by running the following command: npm uninstall @emerald-react/app-header. Alternatively, you may explore other UI component libraries that do not have known vulnerabilities.
Conclusion
The @emerald-react/app-header package has been identified with a critical vulnerability due to malicious code. It is essential for developers using this package to take immediate action by updating to a secure version or removing the package altogether. Utilizing tools like Vulert can help monitor for vulnerabilities in real-time, ensuring the security of your applications.
See every vulnerability recorded for @emerald-react/app-header →
FAQ
The malicious code can lead to unauthorized access and potential data breaches in applications using the package.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time. Check your application's package-lock.json file at Vulert Scanner to see if it is affected.
If an immediate update is not possible, consider removing the package or using an alternative library until a secure version is available.
The vulnerability was reported by ReversingLabs, a security research firm specializing in malware analysis.
Yes, the versions 999.999.999 and 9999.9999.9999 of the @emerald-react/app-header package are known to contain the malicious code.
