Malicious Code Vulnerability in difficult_quail_z3n Package

difficult_quail_z3n Updated 24 Nov 2025

Summary

11/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-101568: Malicious code in difficult_quail_z3n (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The difficult_quail_z3n package is part of the npm ecosystem, often used for various development tasks. However, it has been identified as part of a malicious campaign that floods the npm registry with harmful packages. This package, like others in the campaign, is designed to manipulate developer reputation scores through automated publishing scripts, which can lead to significant security risks for users.

Vulnerability Detail

The vulnerability originates from the package's involvement in the tea.xyz token reward campaign, which aims to inflate developer reputation scores by flooding the npm registry with derivative packages. The malicious payload modifies the package.json file to remove private flags, alters version numbers, and generates random package names, leading to potential security breaches and pollution of the npm registry. This can result in developers unknowingly using compromised packages, exposing their applications to further vulnerabilities.

How To Fix

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

npm uninstall difficult_quail_z3n

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

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Workaround

As a temporary measure, avoid using the difficult_quail_z3n package and consider using alternative packages that provide similar functionality without the associated risks. Regularly audit your package dependencies to ensure no malicious packages are included.

Conclusion

The difficult_quail_z3n package poses a significant security risk due to its involvement in a malicious campaign. It is crucial for developers to remove this package from their projects and monitor their dependencies for any vulnerabilities. Utilizing tools like Vulert can aid in maintaining the security of your applications.

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FAQ

difficult_quail_z3n is an npm package that has been identified as part of a malicious campaign aimed at inflating developer reputation scores.

The vulnerability can lead to the use of compromised packages, exposing your application to security risks and potential data breaches.

You should uninstall the difficult_quail_z3n package immediately and check for any dependencies that may be affected.

You can use tools like Vulert, which monitors your package-lock.json for open-source vulnerabilities in real-time, alerting you to any issues.

Yes, you can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without requiring an account.

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How To Fix

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

npm uninstall difficult_quail_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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