Malicious Code Injection in usual_lamprey-teagooddev Package

usual_lamprey-teagooddev Updated 18 Nov 2025

Summary

11/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-110261: Malicious code in usual_lamprey-teagooddev (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The usual_lamprey-teagooddev package is part of the tea.xyz token reward campaign that has infiltrated the npm ecosystem. This package is designed to facilitate token rewards through various scripts that automatically publish derivative packages. Its functionality is compromised due to the presence of malicious code that alters package metadata and floods the npm registry with unwanted variants.

Vulnerability Detail

The vulnerability originates from the malicious intent behind the usual_lamprey-teagooddev package, which contains scripts that modify the package.json file to remove private flags and change version numbers. This allows the package to generate random names and continuously republish variants, leading to pollution of the npm registry. The ramifications include potential security risks for developers who unknowingly use these packages, as well as damage to the integrity of the npm ecosystem.

How To Fix

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

npm uninstall usual_lamprey-teagooddev

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 usual_lamprey-teagooddev package and monitor your dependencies for any instances of this package. You can also use the following command to uninstall it: npm uninstall usual_lamprey-teagooddev.

Conclusion

The usual_lamprey-teagooddev package poses a significant risk due to its malicious code that alters package metadata and floods the npm registry. It is crucial to remove this package from your project and monitor your dependencies for similar vulnerabilities. Utilizing tools like Vulert can help maintain the security of your software.

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FAQ

It is a package associated with the tea.xyz token reward campaign, which has been identified to contain malicious code.

The vulnerability can lead to the pollution of the npm registry and may compromise the security of your project by introducing unwanted packages.

You should uninstall the package immediately and check your project for any other affected dependencies.

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

You can use the Vulert playground at Vulert Scanner to check your application for vulnerabilities without needing to sign up.

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How To Fix

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

npm uninstall usual_lamprey-teagooddev

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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