Malicious Code Vulnerability in mutdaufs-marimasa-nutat Package
Summary
MAL-2025-161126: Malicious code in mutdaufs-marimasa-nutat (npm). Affected versions are not published. No fix is published. How to fix ↓
Check if this vulnerability affects your application
Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.
No signup required · Results in about 60 seconds
Background
The mutdaufs-marimasa-nutat package is part of the npm ecosystem and is associated with the tea.xyz token reward campaign. This package is designed to facilitate the automatic generation and publication of derivative packages, which can inflate developer reputation scores for token rewards. However, it has been identified as containing malicious scripts that compromise its integrity.
Vulnerability Detail
The vulnerability in the mutdaufs-marimasa-nutat package stems from its inclusion in a malicious campaign that modifies the package.json file to remove private flags, alters version numbers, and generates random package names. This behavior leads to the continuous republishing of variants, which pollutes the npm registry and can potentially harm developers by affecting their reputation and the integrity of their projects.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall mutdaufs-marimasa-nutatIf 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 measure, you can prevent the installation of this package by using npm's package-lock.json to monitor dependencies. Additionally, you can use the following command to uninstall the package: npm uninstall mutdaufs-marimasa-nutat.
Conclusion
The mutdaufs-marimasa-nutat package contains malicious code that poses a significant risk to developers and their projects. It is crucial to remove this package and monitor for any updates. Utilizing tools like Vulert can help in identifying vulnerabilities in your dependencies.
See every vulnerability recorded for mutdaufs-marimasa-nutat →
FAQ
It is an npm package associated with a token reward campaign that has been identified as malicious.
The vulnerability can lead to the pollution of the npm registry and may compromise the integrity of your project's dependencies.
You should uninstall the package immediately and monitor for any updates or patches.
Yes, Vulert allows you to monitor and alert for open-source vulnerabilities using just your package-lock.json file.
You can use the Vulert playground at Vulert Scanner to check for vulnerabilities without any signup.
