Malicious Code Injection in messi-urt-efduds Package

messi-urt-efduds Updated 26 Nov 2025

Summary

12/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-160395: Malicious code in messi-urt-efduds (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The messi-urt-efduds package is part of the npm ecosystem, which is widely used for managing JavaScript packages. This package is associated with the tea.xyz token reward campaign, which has been known to flood the npm registry with malicious packages. The primary function of such packages is to manipulate developer reputation scores through automated publishing scripts, leading to potential security risks for users.

Vulnerability Detail

The vulnerability in the messi-urt-efduds package stems from its malicious code that modifies the package.json file to remove private flags, alters version numbers, and generates random package names. This behavior is designed to inflate developer reputation scores fraudulently and pollute the npm registry with derivative packages. The origin of this vulnerability is linked to the tea.xyz token reward campaign, which employs autopublish scripts to automate the creation and publishing of these malicious packages.

How To Fix

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

npm uninstall messi-urt-efduds

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 messi-urt-efduds package from your project by executing the command: npm uninstall messi-urt-efduds. This will prevent any malicious code from executing while you assess the situation.

Conclusion

The messi-urt-efduds package contains malicious code that can compromise your project's security. It is crucial to take immediate action by updating or removing the package and monitoring your project for vulnerabilities. Utilizing tools like Vulert can help in maintaining the security of your software.

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FAQ

The messi-urt-efduds package is an npm package associated with a token reward campaign that has been identified as malicious.

The vulnerability can lead to unauthorized modifications of your package.json file, potentially compromising your project's integrity and security.

If you have installed the messi-urt-efduds package, it is recommended to uninstall it immediately and check for any unauthorized changes in your project.

You can use Vulert, which monitors and alerts for open-source vulnerabilities in your software by analyzing your package-lock.json file. You can check your application for vulnerabilities using the Vulert playground without any signup.

To prevent future vulnerabilities, regularly update your dependencies, use trusted sources for packages, and consider using tools like Vulert for real-time monitoring.

How To Fix

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

npm uninstall messi-urt-efduds

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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