Malicious Code Injection in Gorgeous Guppy Z3N Package

gorgeous_guppy_z3n Updated 27 Nov 2025

Summary

11/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-94718: Malicious code in gorgeous_guppy_z3n (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The Gorgeous Guppy Z3N package is part of the npm ecosystem, typically used for various JavaScript applications. However, it has been identified as part of a malicious campaign that aims to exploit npm's package publishing system. This package is associated with the tea.xyz token reward initiative, which has led to the proliferation of numerous derivative packages designed to manipulate developer reputation scores.

Vulnerability Detail

The vulnerability stems from malicious code embedded within the Gorgeous Guppy Z3N package. This code modifies the package.json file to remove private flags, alters version numbers, and generates random package names, primarily themed around Indonesian culture. As a result, it continuously republishes these variants, polluting the npm registry and potentially compromising the integrity of other packages and applications that rely on npm.

How To Fix

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

npm uninstall gorgeous_guppy_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 avoid using the Gorgeous Guppy Z3N package and look for alternative packages that provide similar functionality without the associated risks. Additionally, ensure that your package-lock.json file is monitored for any unauthorized changes.

Conclusion

The Gorgeous Guppy Z3N package has been identified as a vector for malicious code that compromises the npm ecosystem. It is essential for developers to remove this package and monitor their projects for any signs of unauthorized changes. Utilizing tools like Vulert can help in maintaining the security of your applications.

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FAQ

It is an npm package that has been identified as part of a malicious campaign to manipulate npm's package publishing system.

The malicious code modifies your package.json file, potentially leading to unauthorized package republishing and compromising your application's integrity.

You should uninstall the Gorgeous Guppy Z3N package immediately and monitor your project for any unauthorized changes.

Yes, you can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time. You can check your application using the Vulert playground without any signup.

Regularly audit your dependencies, use tools like Vulert to monitor for vulnerabilities, and ensure that you only install packages from trusted sources.

How To Fix

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

npm uninstall gorgeous_guppy_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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