Malicious Code Injection in purring_wildcat_z3n Package
Summary
MAL-2025-96123: Malicious code in purring_wildcat_z3n (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The purring_wildcat_z3n package is part of the npm ecosystem, often utilized for various JavaScript applications. It has been identified as part of a larger campaign that exploits npm's package publishing system. This package, like others in the campaign, is designed to manipulate developer reputation scores through the automated generation and publication of derivative packages.
Vulnerability Detail
The vulnerability in the purring_wildcat_z3n package stems from its 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, leading to pollution of the npm registry. This behavior can compromise the integrity of the npm ecosystem and potentially expose users to further security risks.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall purring_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 measure, you can prevent the installation of this malicious package by using the following command to uninstall it: npm uninstall purring_wildcat_z3n. Additionally, consider using tools like Vulert to monitor your package dependencies for vulnerabilities.
Conclusion
The purring_wildcat_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 utilize monitoring tools like Vulert to safeguard their applications from potential vulnerabilities.
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FAQ
purring_wildcat_z3n is an npm package that has been identified as part of a malicious campaign to manipulate developer reputation scores.
The vulnerability can lead to the pollution of the npm registry and may expose your application to further security risks due to the presence of malicious code.
You should uninstall the purring_wildcat_z3n package immediately and monitor your dependencies for any further vulnerabilities.
Yes, you can use Vulert, which monitors your package-lock.json file to alert you in real-time for any open-source vulnerabilities.
Yes, you can use the Vulert playground at Vulert Scanner to check for vulnerabilities in your application without requiring an account.
