Malicious Code Detected in dependencies-node-sass-arcturus-mini-css-extract-plugin Package

Summary

14/08/2025
CRITICAL
No i
Critical
Not published

MAL-2025-18287: Malicious code in dependencies-node-sass-arcturus-mini-css-extract-plugin (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The dependencies-node-sass-arcturus-mini-css-extract-plugin is an npm package designed to facilitate the integration of Node Sass with the Mini CSS Extract Plugin. This package is commonly used in web development to optimize CSS extraction during the build process. However, it has been identified to contain malicious code, posing a significant security risk to applications that utilize it.

Vulnerability Detail

The vulnerability stems from the inclusion of malicious code within the dependencies-node-sass-arcturus-mini-css-extract-plugin package. This code can potentially compromise the security of applications that depend on this package, leading to unauthorized access, data breaches, or other malicious activities. The issue was introduced in version 0 and affects all subsequent versions, making it critical for users to address this vulnerability promptly.

How To Fix

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

npm uninstall dependencies-node-sass-arcturus-mini-css-extract-plugin

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, consider removing the dependencies-node-sass-arcturus-mini-css-extract-plugin package from your project until a secure version is released. You can do this by executing: npm uninstall dependencies-node-sass-arcturus-mini-css-extract-plugin. Additionally, you can monitor your project for vulnerabilities using Vulert, which analyzes your package-lock.json file for real-time alerts on open-source vulnerabilities.

Conclusion

The discovery of malicious code in the dependencies-node-sass-arcturus-mini-css-extract-plugin package highlights the importance of maintaining secure dependencies in software development. Users are strongly advised to update or remove the affected package and utilize tools like Vulert for ongoing vulnerability management.

See every vulnerability recorded for dependencies-node-sass-arcturus-mini-css-extract-plugin →

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FAQ

The malicious code can perform unauthorized actions within your application, potentially leading to data theft or system compromise.

You can use the Vulert playground at Vulert Scanner to analyze your package-lock.json file for vulnerabilities without needing to sign up.

As of now, it is crucial to check the package repository for any updates or patches that address this vulnerability.

If an immediate update is not possible, consider removing the package temporarily and monitoring your application for any unusual activity.

Vulert provides real-time monitoring and alerts for open-source vulnerabilities by analyzing your package-lock.json file, allowing you to stay informed about potential risks.

How To Fix

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

npm uninstall dependencies-node-sass-arcturus-mini-css-extract-plugin

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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