Malicious Code Injection in Dangerous Ermine-Silentdev Package

dangerous_ermine-silentdev Updated 24 Nov 2025

Summary

11/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-101202: Malicious code in dangerous_ermine-silentdev (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The Dangerous Ermine-Silentdev package is part of the npm ecosystem, often utilized for various JavaScript projects. However, it has been identified as part of a malicious campaign that floods the npm registry with harmful packages. This package is designed to manipulate developer reputation scores through the automatic generation and publication of derivative packages, which can lead to significant security risks for users and their applications.

Vulnerability Detail

The vulnerability stems from the package's malicious code, which modifies the package.json file to remove private flags and alters version numbers. It generates random package names, often themed around Indonesian culture, and continuously republishes these variants to clutter the npm registry. This behavior not only compromises the integrity of the npm ecosystem but also poses risks to developers who may unknowingly integrate these malicious packages into their projects.

How To Fix

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

npm uninstall dangerous_ermine-silentdev

If 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 Dangerous Ermine-Silentdev package and instead look for alternative packages that provide similar functionality without the associated risks. Additionally, consider using tools like Vulert to monitor your project for vulnerabilities. You can check if your application is affected by this vulnerability using the Vulert playground at https://vulert.com/scanner without needing to sign up.

Conclusion

The Dangerous Ermine-Silentdev package poses a significant security risk due to its malicious code designed to manipulate the npm registry. It is essential for developers to be vigilant and take immediate action to remove this package and monitor their projects for vulnerabilities using tools like Vulert.

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FAQ

It is an npm package that has been identified as part of a malicious campaign to inflate developer reputation scores through the automatic generation of harmful derivative packages.

If integrated into your project, this package can compromise your application's security and integrity, potentially leading to unauthorized access or data breaches.

You should immediately remove the Dangerous Ermine-Silentdev package from your project and update your dependencies to ensure you are not using any compromised versions.

You can use tools like Vulert, which monitors your package-lock.json file to alert you in real-time about open-source vulnerabilities in your software.

Yes, you can use the Vulert playground at Vulert Scanner to check for vulnerabilities in your application without needing to create an account.

Sponsored Lume, the Habilume companion Habilume Habit tracker with a companion that grows with you Complete habits, earn Lume Points, and watch your Lume grow as you stay consistent. App Store Google Play

How To Fix

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

npm uninstall dangerous_ermine-silentdev

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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