Critical Malicious Code Vulnerability in @asyncapi/web-component Package

@asyncapi/web-component Updated 24 Nov 2025

Summary

24/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-190721: Malicious code in @asyncapi/web-component (npm). Affects @asyncapi/web-component versions 2.6.6 – 2.6.7. No fix is published. How to fix ↓

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Background

The @asyncapi/web-component package is a JavaScript library designed to facilitate the integration of AsyncAPI specifications into web applications. It provides developers with tools to render and interact with API documentation seamlessly. However, this package has been identified as containing malicious code, posing significant security risks to any system utilizing it.

Vulnerability Detail

The vulnerability stems from the presence of embedded malicious code within the @asyncapi/web-component package. This code can compromise any computer that has the package installed, leading to unauthorized access and control by external entities. Users are advised to treat any system running this package as fully compromised, as the malicious code may allow attackers to access sensitive information, including secrets and keys stored on the affected system.

How To Fix

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

npm uninstall @asyncapi/web-component

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

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Workaround

As a workaround, you can temporarily switch to an alternative package that provides similar functionality without the security risks. However, ensure that any alternative package is thoroughly vetted for security before use.

Conclusion

The @asyncapi/web-component package has been identified as containing malicious code, posing a significant security threat to users. Immediate action is required to uninstall the package and secure any sensitive information. Regular monitoring for vulnerabilities, such as through the Vulert platform, is recommended to maintain application security.

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FAQ

You should immediately uninstall the package and rotate any sensitive information stored on your system.

You can use the Vulert platform to monitor and alert for vulnerabilities in your application. Visit Vulert Scanner to check your application without needing to sign up.

No, there are currently no patched versions available for the @asyncapi/web-component package. The only solution is to uninstall the package.

Failing to address this vulnerability can lead to unauthorized access to your system, potential data breaches, and loss of sensitive information.

It is highly discouraged to use this package until it has been confirmed to be free of malicious code. Consider using alternative packages.

How To Fix

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

npm uninstall @asyncapi/web-component

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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