Malicious Code Injection in quick_narwhal_z3n: A Threat to npm Ecosystem
Summary
MAL-2025-96155: Malicious code in quick_narwhal_z3n (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The package quick_narwhal_z3n is part of a series of npm packages that emerged during the tea.xyz token reward campaign. These packages are designed to inflate developer reputation scores by automatically generating and publishing derivative packages with randomized names. The malicious nature of this package lies in its ability to modify critical files and continuously republish variants, thereby polluting the npm registry.
Vulnerability Detail
The vulnerability originates from the inclusion of malicious scripts within the quick_narwhal_z3n package. These scripts, such as auto.js and autopublish.js, are designed to alter the package.json file by removing private flags, changing version numbers, and generating random package names. This behavior not only compromises the integrity of the npm registry but also poses a risk to developers who may unknowingly install these malicious packages, leading to potential security breaches in their applications.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall quick_narwhal_z3nIf it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.
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Workaround
As a temporary workaround, you can use the following command to prevent the installation of the quick_narwhal_z3n package in your project: npm install --no-save quick_narwhal_z3n. However, this does not eliminate the risk entirely, and it is advisable to remove the package completely.
Conclusion
The quick_narwhal_z3n package poses a significant threat to the npm ecosystem due to its malicious code designed to manipulate package metadata and publish unwanted variants. It is crucial for developers to remain vigilant, regularly update their dependencies, and utilize tools like Vulert to monitor for vulnerabilities.
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FAQ
quick_narwhal_z3n is an npm package that has been identified as malicious, designed to inflate developer reputation scores through automated publishing of derivative packages.
The malicious code modifies your package.json file, removes private flags, and can lead to the installation of unwanted packages, compromising your project's integrity.
You should immediately uninstall the package using npm uninstall quick_narwhal_z3n and review your project dependencies for any other potentially malicious packages.
You can use tools like Vulert, which monitors and alerts you in real-time for open-source vulnerabilities in your software by analyzing your package-lock.json file.
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.
