Malicious Code Injection in important_wildcat_z3n Package - npm Vulnerability
Summary
MAL-2025-94951: Malicious code in important_wildcat_z3n (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The important_wildcat_z3n package is part of the npm ecosystem, often utilized in JavaScript projects. It is associated with the tea.xyz token reward campaign, which has been known to flood the npm registry with numerous packages. This package, like others in the campaign, is designed to manipulate developer reputation scores through the automatic generation and publication of derivative packages.
Vulnerability Detail
The vulnerability originates from malicious code embedded within the important_wildcat_z3n package. This code modifies the package.json file to remove private flags, alters version numbers, and generates random package names, primarily themed around Indonesian culture. The malicious payload continuously republishes these variants, leading to pollution of the npm registry and potential security risks for developers who inadvertently use these packages.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall important_wildcat_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 remove the important_wildcat_z3n package from your project by executing the command: 'npm uninstall important_wildcat_z3n'. This will prevent any malicious code from executing until a secure version is available.
Conclusion
The important_wildcat_z3n package contains malicious code that poses significant risks to developers and their projects. It is essential to take immediate action by updating or removing the package and utilizing tools like Vulert for ongoing vulnerability monitoring.
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FAQ
important_wildcat_z3n is an npm package associated with the tea.xyz token reward campaign, which has been linked to malicious activities in the npm registry.
The malicious code modifies your package.json file, potentially exposing your project to security risks and causing it to publish unauthorized packages.
If you have installed the important_wildcat_z3n package, you should uninstall it immediately and check for any updates or patches.
Yes, you can use Vulert to monitor your project for open-source vulnerabilities in real-time. It analyzes your package-lock.json file to alert you of any issues.
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