Malicious Code Injection in eldest_wolverine_z3n Package
Summary
MAL-2025-102005: Malicious code in eldest_wolverine_z3n (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The eldest_wolverine_z3n package is part of the npm ecosystem and is associated with the tea.xyz token reward campaign. This package is designed to facilitate the automatic generation and publication of derivative packages, which can inflate developer reputation scores for token rewards. However, it has been identified as containing malicious code that compromises its integrity and the security of the npm registry.
Vulnerability Detail
The vulnerability stems from the malicious payload embedded within the eldest_wolverine_z3n package. This payload modifies the package.json file to remove private flags, alters version numbers, and generates random package names, which are then continuously republished. This behavior not only pollutes the npm registry but also poses a risk to developers who may unknowingly use these compromised packages, leading to potential security breaches and loss of trust in the npm ecosystem.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall eldest_wolverine_z3nIf it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.
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Workaround
Currently, the best workaround is to avoid using the eldest_wolverine_z3n package altogether. If it is already in use, ensure to remove it from your project to prevent any malicious activity.
Conclusion
The eldest_wolverine_z3n package has been identified as containing malicious code that can compromise the security of projects using it. It is crucial to remove this package and monitor for any vulnerabilities in your applications to maintain a secure development environment.
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FAQ
The eldest_wolverine_z3n package is an npm package associated with the tea.xyz token reward campaign, designed to generate and publish derivative packages.
The vulnerability can lead to the modification of your package.json file and the introduction of malicious packages, which may compromise your project's security.
You should immediately uninstall the eldest_wolverine_z3n package from your project using npm uninstall eldest_wolverine_z3n.
Yes, you can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time using just your package-lock.json file.
You can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without requiring any signup.
