Malicious Code Injection in supporting_finch_z3n Package

supporting_finch_z3n Updated 27 Nov 2025

Summary

11/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-96874: Malicious code in supporting_finch_z3n (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The supporting_finch_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 the integrity of the npm registry.

Vulnerability Detail

The vulnerability in the supporting_finch_z3n package originates from its involvement in a malicious campaign that floods the npm registry with derivative packages. The malicious payload modifies the package.json file by removing private flags, altering version numbers, and generating random package names. 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 in their applications.

How To Fix

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

npm uninstall supporting_finch_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 supporting_finch_z3n package from your project by executing the following command: npm uninstall supporting_finch_z3n. This will help mitigate the risk until a fixed version is released.

Conclusion

The supporting_finch_z3n package has been identified as containing malicious code that compromises the npm registry. It is crucial for developers to take immediate action by updating or removing the package to safeguard their applications from potential security threats.

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FAQ

The supporting_finch_z3n package is an npm package associated with the tea.xyz token reward campaign, designed to automate the publication of derivative packages.

The malicious code modifies your package.json file, potentially leading to the inclusion of compromised packages in your application, which can introduce security vulnerabilities.

Yes, you can use Vulert, which monitors and alerts for open-source vulnerabilities in your software. You can check if your application is affected by using the Vulert playground at Vulert Scanner without any signup.

If you cannot update the package, it is advisable to remove it from your project to avoid exposure to the malicious code.

Regularly monitor your dependencies for vulnerabilities using tools like Vulert, and keep your packages updated to the latest secure versions.

How To Fix

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

npm uninstall supporting_finch_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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