Malicious Code Injection in bare_donkey_z3n Package - npm Vulnerability

bare_donkey_z3n Updated 27 Nov 2025

Summary

11/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-99798: Malicious code in bare_donkey_z3n (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The bare_donkey_z3n package is part of the npm ecosystem, typically used for various JavaScript functionalities. However, it has been identified as part of a malicious campaign aimed at inflating developer reputation scores through the tea.xyz token reward system. This package is designed to automatically generate and publish derivative packages with randomized names, which can lead to significant pollution of the npm registry.

Vulnerability Detail

The vulnerability in the bare_donkey_z3n package originates from its inclusion in a malicious campaign that modifies the package.json file. This modification removes private flags, alters version numbers, and generates random package names, thereby allowing the package to continuously republish variants. The ramifications include potential security risks for developers using this package, as it can lead to the installation of unwanted or harmful code in their projects.

How To Fix

This package is malicious. Remove it and rotate any credentials it could have accessed.

npm uninstall bare_donkey_z3n

If it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.

Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →

Workaround

As a temporary workaround, you can remove the bare_donkey_z3n package from your project by executing the command: npm uninstall bare_donkey_z3n. This will prevent any malicious code from executing in your environment until a patched version is available.

Conclusion

The bare_donkey_z3n package poses a significant security risk due to its malicious code injection. It is crucial to take immediate action by updating or removing the package to protect your project from potential threats. Utilizing tools like Vulert can help you stay informed about vulnerabilities in your dependencies.

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FAQ

bare_donkey_z3n is an npm package that has been identified as part of a malicious campaign to inflate developer reputation scores.

The vulnerability can lead to the installation of unwanted code, which may compromise the security and integrity of your project.

You should uninstall the package immediately and check for any other dependencies that may be affected.

Yes, you can use Vulert, which monitors and alerts in real-time for open-source vulnerabilities using just your package-lock.json file.

You can use the Vulert playground at Vulert Scanner to check if your application is affected without any signup.

How To Fix

This package is malicious. Remove it and rotate any credentials it could have accessed.

npm uninstall bare_donkey_z3n

If it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.

Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →

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