Malicious Code Injection in endless_python_z3n Package - npm Vulnerability
Summary
MAL-2025-133098: Malicious code in endless_python_z3n (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The endless_python_z3n package is part of the npm ecosystem, often used in JavaScript projects. It is associated with the tea.xyz token reward campaign, which has been linked to the proliferation of malicious packages on npm. This package is designed to generate and publish derivative packages with randomized names, aiming to inflate developer reputation scores for token rewards.
Vulnerability Detail
The vulnerability in the endless_python_z3n package stems from its malicious payload, 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 can result in security risks for developers who unknowingly integrate these malicious packages into their projects, potentially compromising their applications.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall endless_python_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 endless_python_z3n package from your project by executing the following command: npm uninstall endless_python_z3n. Additionally, you can use Vulert to monitor your project for vulnerabilities by checking your package-lock.json file. Visit https://vulert.com/scanner to assess if your application is affected by this vulnerability without needing to sign up.
Conclusion
The endless_python_z3n package poses a significant security risk due to its malicious behavior of modifying package files and republishing variants. It is essential to take immediate action by updating or removing the package and utilizing tools like Vulert to monitor for vulnerabilities in your projects.
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FAQ
endless_python_z3n is an npm package associated with a token reward campaign that has been identified as malicious due to its behavior of generating and publishing derivative packages.
The vulnerability can lead to the inclusion of malicious code in your project, potentially compromising its security and functionality.
If you have installed the endless_python_z3n package, it is recommended to uninstall it immediately and check for any other affected packages.
You can use Vulert to monitor your project for open-source vulnerabilities by analyzing your package-lock.json file. Visit Vulert Scanner for more information.
To prevent similar vulnerabilities, regularly audit your dependencies, use tools like Vulert for monitoring, and stay updated on security advisories related to your packages.
