Malicious Code Injection in resident_louse_dumbs Package - npm Vulnerability

resident_louse_dumbs Updated 18 Nov 2025

Summary

11/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-107933: Malicious code in resident_louse_dumbs (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The resident_louse_dumbs package is part of the npm ecosystem, often utilized in JavaScript projects for various functionalities. However, it has been identified as part of a malicious campaign that floods the npm registry with derivative packages. This package is designed to manipulate developer reputation scores through automated publishing scripts, which can lead to significant issues in the integrity of the npm ecosystem.

Vulnerability Detail

The vulnerability in the resident_louse_dumbs package stems from its association with a malicious campaign that modifies the package.json file to remove private flags and alters version numbers. It generates random package names, primarily themed around Indonesian culture, and continuously republishes these variants, polluting the npm registry. This behavior can lead to compromised developer reputations and potential security risks for applications relying on these packages.

How To Fix

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

npm uninstall resident_louse_dumbs

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, you can avoid using the resident_louse_dumbs package and any packages that depend on it. Regularly audit your package.json and package-lock.json files to ensure no malicious packages are included. You can also use tools like Vulert to monitor your project for vulnerabilities.

Conclusion

The resident_louse_dumbs package poses a significant risk due to its malicious behavior, which can compromise the integrity of applications relying on npm packages. It is crucial to take immediate action by removing this package and monitoring your project for vulnerabilities using tools like Vulert.

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FAQ

The resident_louse_dumbs package is an npm package that has been identified as part of a malicious campaign aimed at manipulating developer reputation scores.

This vulnerability can lead to the introduction of malicious code into your application, potentially compromising its security and integrity.

You should immediately uninstall the resident_louse_dumbs package and check your project for any dependencies that may be affected.

You can use Vulert, which monitors your package-lock.json file for vulnerabilities in real-time without requiring code access or installation.

Yes, you can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without any signup.

How To Fix

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

npm uninstall resident_louse_dumbs

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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