Malicious Code Injection in mahnud-unag-goi: A Threat to npm Packages
Summary
MAL-2025-159115: Malicious code in mahnud-unag-goi (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
mahnud-unag-goi is an npm package that has been identified as part of a malicious campaign targeting the npm registry. This package is associated with the tea.xyz token reward initiative, which aims to inflate developer reputation scores through the automatic generation and publishing of derivative packages. The malicious nature of this package lies in its ability to modify critical files and continuously republish variants, thereby polluting the npm ecosystem.
Vulnerability Detail
The vulnerability in mahnud-unag-goi stems from its malicious payload that alters the package.json file by removing private flags and changing version numbers. It generates random package names, primarily themed around Indonesian culture, and continuously republishes these variants. This behavior not only compromises the integrity of the npm registry but also poses a risk to developers who might unknowingly use these compromised packages, leading to potential security breaches in their applications.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall mahnud-unag-goiIf 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 mahnud-unag-goi package and monitor your project for any unauthorized changes. You can also utilize tools like Vulert to monitor your package-lock.json for vulnerabilities in real-time. To check if your application is affected by this vulnerability, you can use the Vulert playground at https://vulert.com/scanner without any signup.
Conclusion
The mahnud-unag-goi package poses a significant threat to the npm ecosystem due to its malicious behavior of modifying package files and republishing variants. It is crucial for developers to be vigilant, remove this package, and utilize monitoring tools like Vulert to safeguard their applications against such vulnerabilities.
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FAQ
mahnud-unag-goi is an npm package that has been identified as part of a malicious campaign aimed at inflating developer reputation scores through the automatic generation of derivative packages.
The vulnerability allows the package to modify your package.json file, potentially leading to unauthorized changes and the introduction of malicious code into your application.
If you have installed the mahnud-unag-goi package, you should immediately uninstall it using the command npm uninstall mahnud-unag-goi and review your project for any unauthorized changes.
To prevent similar vulnerabilities, regularly update your packages, use trusted sources, and monitor your dependencies with tools like Vulert.
Vulert is a tool that monitors your package-lock.json for open-source vulnerabilities in real-time. It alerts you to potential risks without requiring access to your code or installation.
