Malicious Code Detected in capsule-ui Package - Immediate Action Required

capsule-ui Updated 02 Oct 2025

Summary

14/08/2025
CRITICAL
No i
Critical
Not published

MAL-2025-16519: Malicious code in capsule-ui (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The capsule-ui package is a JavaScript library used in web development, providing UI components for building user interfaces. It is widely utilized in various applications due to its ease of integration and rich feature set. However, recent findings have revealed that this package contains malicious code, posing significant security risks to applications that depend on it.

Vulnerability Detail

The vulnerability in the capsule-ui package stems from the inclusion of malicious code that can compromise the security of applications using this library. This code may allow unauthorized access to sensitive data, execute arbitrary commands, or facilitate further attacks on the system. The issue was introduced in version 0 and affects all subsequent versions, making it critical for developers to take immediate action to mitigate potential risks.

How To Fix

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

npm uninstall capsule-ui

If it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.

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Workaround

As a temporary workaround, you can remove the capsule-ui package from your project by running the following command: npm uninstall capsule-ui. Consider using alternative UI component libraries that are known to be secure until a fix is provided.

Conclusion

The discovery of malicious code in the capsule-ui package poses a serious threat to applications that utilize it. Developers are urged to take immediate action by removing the package and seeking alternatives. Continuous monitoring for updates and vulnerabilities is essential to maintain application security.

See every vulnerability recorded for capsule-ui →

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FAQ

capsule-ui is a JavaScript library used for building user interfaces in web applications.

The malicious code can potentially allow unauthorized access to sensitive data and execute arbitrary commands.

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.

You should immediately uninstall the capsule-ui package and consider using a secure alternative until a patch is released.

As of now, there is no patched version available. It is recommended to remove the package 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 capsule-ui

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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