Malicious Code Injection in head_bear_z3n Package - npm Vulnerability
Summary
MAL-2025-94793: Malicious code in head_bear_z3n (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The head_bear_z3n package is part of the npm ecosystem, which is widely used for JavaScript package management. This package, like many others, is intended to facilitate development by providing reusable code. However, it has been identified as part of a malicious campaign that floods the npm registry with derivative packages, compromising the integrity of the ecosystem.
Vulnerability Detail
The vulnerability in the head_bear_z3n package stems from its association with the tea.xyz token reward campaign. This package contains malicious scripts that modify the package.json file to remove private flags, alter version numbers, and generate random package names. The intent is to inflate developer reputation scores for token rewards, leading to pollution of the npm registry and potential security risks for developers relying on these packages.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall head_bear_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 head_bear_z3n package and any packages that may depend on it. Regularly audit your package-lock.json file to identify and remove any malicious packages.
Conclusion
The head_bear_z3n package poses a significant risk due to its malicious nature, which can compromise the integrity of your project and the npm ecosystem. It is essential to remove this package and monitor your dependencies for vulnerabilities to maintain a secure development environment.
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FAQ
The head_bear_z3n package is an npm package that has been identified as malicious, part of a campaign to inflate developer reputation scores through the creation of derivative packages.
If your project uses the head_bear_z3n package, it may inadvertently contribute to the pollution of the npm registry and expose your project to security risks.
You should uninstall the head_bear_z3n package immediately using the command 'npm uninstall head_bear_z3n' and check for any dependencies that may be affected.
You can use tools like Vulert, which monitors your package-lock.json file for open-source vulnerabilities in real-time. You can check your application for vulnerabilities using the Vulert playground without any signup.
Yes, you should look for reputable packages that provide similar functionality without the associated risks of malicious code.
