Critical Malicious Code Vulnerability in ui-core_mal Package

ui-core_mal Updated 19 Mar 2026

Summary

18/03/2026
CRITICAL
No i
Critical
Not published

MAL-2026-1870: Malicious code in ui-core_mal (npm). Affects ui-core_mal versions 9.849.9. No fix is published. How to fix ↓

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Background

The ui-core_mal package is a JavaScript library available through npm, designed to facilitate user interface development in web applications. It provides a range of functionalities that enhance the user experience. However, this package has been identified as containing malicious code, posing significant security risks to applications that utilize it.

Vulnerability Detail

The vulnerability stems from the inclusion of malicious code within the ui-core_mal package, specifically in version 9.849.9. This code can lead to unauthorized access, data breaches, and potential system compromise. The malicious nature of this code was identified by ReversingLabs, highlighting the importance of scrutinizing third-party packages for security threats.

How To Fix

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

npm uninstall ui-core_mal

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 workaround, you may consider removing the ui-core_mal package from your project until a secure version is available. You can do this by executing the command: 'npm uninstall ui-core_mal'. Additionally, consider using alternative packages that provide similar functionalities without the associated risks.

Conclusion

The ui-core_mal package has been identified as containing malicious code, posing serious security risks. It is essential to update to the latest version or remove the package to protect your application. Utilizing tools like Vulert can help monitor and alert for such vulnerabilities in real-time.

See every vulnerability recorded for ui-core_mal →

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FAQ

The ui-core_mal package is a JavaScript library used for developing user interfaces in web applications.

The malicious code can lead to unauthorized access and data breaches, compromising the security of applications that use this package.

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

Yes, it is recommended to update to the latest version of the ui-core_mal package to mitigate the vulnerability.

If immediate updates are not possible, consider removing the package or using alternative libraries until a secure version is released.

How To Fix

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

npm uninstall ui-core_mal

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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