Malicious Code Detected in ac-dom-emitter: A Critical Security Alert

ac-dom-emitter Updated 02 Oct 2025

Summary

14/08/2025
CRITICAL
No i
Critical
Not published

MAL-2025-13965: Malicious code in ac-dom-emitter (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The ac-dom-emitter package is a JavaScript library used in web applications to facilitate event emission and handling within the DOM. It allows developers to create custom events and manage event listeners efficiently. However, this package has been identified to contain malicious code, posing significant security risks to applications that utilize it.

Vulnerability Detail

The vulnerability in ac-dom-emitter stems from the inclusion of malicious code that can compromise the security of applications using this package. This code may allow unauthorized access to sensitive data, execute arbitrary commands, or manipulate the application’s behavior. The malicious nature of this vulnerability was discovered by Amazon Inspector, highlighting the importance of scrutinizing third-party packages for security risks.

How To Fix

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

npm uninstall ac-dom-emitter

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, you can remove the ac-dom-emitter package from your project until a secure version is available. You can do this by executing: 'npm uninstall ac-dom-emitter'. Consider using alternative libraries that provide similar functionality without the associated risks.

Conclusion

The ac-dom-emitter package has been found to contain malicious code, posing a significant risk to applications that utilize it. It is crucial to update to a patched version or remove the package until a secure alternative is found. Regular monitoring for vulnerabilities using tools like Vulert can help maintain application security.

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FAQ

ac-dom-emitter is a JavaScript library that helps developers manage custom events in web applications.

The malicious code was identified by Amazon Inspector, a security tool that scans for vulnerabilities in open-source packages.

Using the compromised version can lead to unauthorized access, data breaches, and potential manipulation of application behavior.

Yes, updating to the latest version of ac-dom-emitter will mitigate the vulnerability.

You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time using just your package-lock.json file. You can also check your application’s status using the Vulert playground.

How To Fix

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

npm uninstall ac-dom-emitter

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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