Malicious Code Exploit in manaf-yuki-nuatsy Package - npm Vulnerability
Summary
MAL-2025-159557: Malicious code in manaf-yuki-nuatsy (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The manaf-yuki-nuatsy package is part of the npm ecosystem, which is widely used for JavaScript package management. This package has been identified as part of a malicious campaign targeting npm, where it is designed to inflate developer reputation scores through the generation and publication of derivative packages. The package's functionality is compromised, leading to significant security risks for developers and users relying on it.
Vulnerability Detail
The vulnerability originates from the manaf-yuki-nuatsy package being part of a malicious campaign that modifies the package.json file to remove private flags and change version numbers. It generates random package names, primarily themed around Indonesian culture, and continuously republishes these variants to pollute the npm registry. This behavior can lead to unauthorized access, reputation damage for developers, and potential exploitation of users who install these compromised packages.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall manaf-yuki-nuatsyIf it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.
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Workaround
As a temporary workaround, you can remove the manaf-yuki-nuatsy package from your project by executing the command: npm uninstall manaf-yuki-nuatsy. This will prevent any malicious code from executing until a secure version is available.
Conclusion
The manaf-yuki-nuatsy package poses a significant security risk due to its malicious behavior of modifying package files and republishing variants. It is essential for developers to take immediate action by removing the package and monitoring their projects for any vulnerabilities. Utilizing tools like Vulert can help maintain the security of your open-source dependencies.
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FAQ
The manaf-yuki-nuatsy package is an npm package that has been identified as part of a malicious campaign to inflate developer reputation scores.
This vulnerability can lead to unauthorized modifications of your project's dependencies and potentially expose your application to security risks.
If you have installed the manaf-yuki-nuatsy package, it is crucial to uninstall it immediately and monitor your project for any unusual behavior.
Yes, you can use Vulert, which monitors and alerts in real-time for open-source vulnerabilities in your software using just package-lock.json. You can check if your application is affected by this vulnerability using the Vulert playground.
Regularly update your dependencies, review their changelogs for security patches, and utilize tools like Vulert to monitor for vulnerabilities.
