Malicious Code Detected in dorado-html-webpack-plugin-less-procyon - Security Alert

Summary

14/08/2025
CRITICAL
No i
Critical
Not published

MAL-2025-18648: Malicious code in dorado-html-webpack-plugin-less-procyon (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The dorado-html-webpack-plugin-less-procyon is an npm package designed to facilitate the integration of Less stylesheets into webpack projects. It streamlines the process of compiling Less files, allowing developers to leverage the power of Less while maintaining a smooth development workflow. However, this package has been identified as containing malicious code, posing significant security risks to users.

Vulnerability Detail

The vulnerability stems from the presence of malicious code within the dorado-html-webpack-plugin-less-procyon package. This code can potentially compromise the security of applications using the 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 imperative for users to take immediate action to mitigate risks.

How To Fix

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

npm uninstall dorado-html-webpack-plugin-less-procyon

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, users can consider using alternative packages that provide similar functionality without the associated risks. For example, consider using 'less-loader' or 'less-webpack-plugin' as alternatives for integrating Less stylesheets into webpack projects.

Conclusion

The discovery of malicious code in the dorado-html-webpack-plugin-less-procyon package poses a serious threat to developers and their applications. Immediate action is required to remove the package and consider alternatives to ensure the security of your projects. Stay vigilant and utilize tools like Vulert to monitor for vulnerabilities.

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FAQ

It is an npm package that helps integrate Less stylesheets into webpack projects, simplifying the development process.

The malicious code was identified through security assessments conducted by Amazon Inspector, which flagged the package for containing harmful elements.

Using this package can lead to unauthorized access, data breaches, and other security vulnerabilities in applications relying on it.

You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time. Visit Vulert Scanner to check your application without needing to sign up.

Immediately remove the package from your project and consider using alternative packages until a safe version is released.

How To Fix

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

npm uninstall dorado-html-webpack-plugin-less-procyon

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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