Malicious Code Injection in probable_crow_z3n Package
Summary
MAL-2025-96035: Malicious code in probable_crow_z3n (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The probable_crow_z3n package is part of the npm ecosystem, typically used for various JavaScript functionalities. However, it has been identified as part of a malicious campaign that exploits npm's publishing features. This package is associated with the tea.xyz token reward scheme, which aims to inflate developer reputation scores through the automatic generation and publication of derivative packages.
Vulnerability Detail
The vulnerability stems from the package's malicious code that modifies the package.json file to remove private flags, alters version numbers, and generates random package names. This behavior leads to the continuous republishing of variants, which pollutes the npm registry and can compromise the integrity of the ecosystem. The malicious payload is designed to exploit npm's publishing mechanisms, creating a significant risk for developers relying on this package.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall probable_crow_z3nIf 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 probable_crow_z3n package and replace it with a trusted alternative that provides similar functionality. Additionally, you can monitor your package-lock.json file for any unauthorized changes.
Conclusion
The probable_crow_z3n package poses a significant risk due to its malicious code that alters package metadata and floods the npm registry. It is crucial for developers to remove this package and monitor their dependencies to maintain the integrity of their applications.
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FAQ
The probable_crow_z3n package is an npm package that has been identified as part of a malicious campaign to inflate developer reputation scores.
The vulnerability can lead to unauthorized modifications in your package.json file and may compromise the integrity of your application by introducing malicious code.
You should uninstall the probable_crow_z3n package immediately and monitor your project for any unauthorized changes.
Yes, you can use Vulert, which monitors and alerts in real-time for open-source vulnerabilities using just your package-lock.json file.
You can use the Vulert playground at Vulert Scanner to check if your application is affected without requiring any signup.
