Malicious Code Injection in Complicated Lamprey Dumbs Package

complicated_lamprey_dumbs Updated 24 Nov 2025

Summary

11/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-100786: Malicious code in complicated_lamprey_dumbs (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The 'complicated_lamprey_dumbs' package is part of the npm ecosystem, often used in JavaScript applications. It is associated with the tea.xyz token reward campaign, which aims to inflate developer reputation scores through the automatic generation and publication of derivative packages. This package has been identified as containing malicious scripts that compromise its integrity and the security of applications relying on it.

Vulnerability Detail

The vulnerability originates from the package's design, which includes autopublish scripts that modify the package.json file to remove private flags and change version numbers. It generates random package names and continuously republishes variants, leading to pollution of the npm registry. This behavior can result in unauthorized access to sensitive data, increased attack surface for applications, and potential exploitation by malicious actors.

How To Fix

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

npm uninstall complicated_lamprey_dumbs

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 prevent the installation of this package by using npm's package-lock.json file to lock your dependencies to known safe versions. Additionally, consider using tools like Vulert to monitor your project for vulnerabilities. You can check if your application is affected by this vulnerability using the Vulert playground at https://vulert.com/scanner without any signup.

Conclusion

The 'complicated_lamprey_dumbs' package poses a significant security risk due to its malicious code that modifies essential files and repopulates the npm registry with harmful variants. It is crucial to uninstall this package and monitor your dependencies for vulnerabilities to safeguard your applications.

See every vulnerability recorded for complicated_lamprey_dumbs →

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FAQ

It is an npm package associated with the tea.xyz token reward campaign, designed to inflate developer reputation scores.

The vulnerability allows for unauthorized modifications to your package.json file, potentially leading to security breaches and data exposure.

You should uninstall the 'complicated_lamprey_dumbs' package immediately and replace it with a secure alternative.

You can use tools like Vulert, which monitors your package-lock.json for vulnerabilities in real-time.

Yes, you can use the Vulert playground at Vulert Scanner to check for vulnerabilities without any signup.

How To Fix

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

npm uninstall complicated_lamprey_dumbs

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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