Malicious Code Detected in ac1 Package - Security Alert
Summary
MAL-2025-13970: Malicious code in ac1 (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The ac1 package is an npm library designed for various functionalities within JavaScript applications. It is commonly used for its lightweight nature and ease of integration. However, recent findings have revealed that this package contains malicious code, posing significant security risks to applications that utilize it.
Vulnerability Detail
The ac1 package has been identified to harbor malicious code, which can lead to unauthorized access, data breaches, or other harmful actions within the applications that depend on it. This vulnerability originated from the package's codebase, which was compromised, allowing attackers to embed harmful scripts. Users of this package are at risk of exploitation, making it imperative to address this issue promptly.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall ac1If it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.
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Workaround
As a temporary measure, you can avoid using the ac1 package and look for alternative libraries that provide similar functionality without the associated risks. Additionally, you can monitor your project for any suspicious activities that may arise from using this package.
Conclusion
The ac1 package has been flagged for containing malicious code, posing serious security threats to applications that utilize it. Users are strongly encouraged to remove the package and seek alternatives or update to a patched version if available. Regular monitoring and vulnerability checks are essential to maintain application security.
See every vulnerability recorded for ac1 →
FAQ
The ac1 package is an npm library used in JavaScript applications for various functionalities, but it has recently been found to contain malicious code.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in your software. By checking your package-lock.json file, you can identify if your application is at risk.
It is advised to remove the ac1 package from your project and replace it with a secure alternative. If a patched version is released, update to that version.
Yes, you can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.
Using the ac1 package can expose your application to unauthorized access, data breaches, and other security threats due to the embedded malicious code.
