Malicious Code Injection in mutaus-manasis-butysd Package
Summary
MAL-2025-161080: Malicious code in mutaus-manasis-butysd (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 mutaus-manasis-butysd 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 are often used to inflate developer reputation scores for token rewards. However, it has been identified as containing malicious code that compromises its integrity and the security of the npm registry.
Vulnerability Detail
The vulnerability in the mutaus-manasis-butysd package originates from its malicious payload, which 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 that pollute the npm registry, potentially affecting other developers and users who rely on the integrity of the npm ecosystem. The malicious code is designed to execute autopublish scripts that can compromise the security of applications using this package.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall mutaus-manasis-butysd
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 to monitor dependencies. You can also use the Vulert platform to check if your application is affected by this vulnerability without requiring access to the code or installation. Visit the Vulert playground at https://vulert.com/scanner to monitor your project for vulnerabilities.
Conclusion
The mutaus-manasis-butysd package contains a significant vulnerability that can compromise the security of applications using it. It is crucial to uninstall this package and monitor your dependencies for any potential risks. Utilizing tools like Vulert can help ensure your project remains secure.
See every vulnerability recorded for mutaus-manasis-butysd →
FAQ
The mutaus-manasis-butysd package is an npm package associated with the tea.xyz token reward campaign, designed to automate the generation and publication of packages.
The vulnerability can lead to the modification of your package.json file, removal of private flags, and the generation of random package names, which can compromise the integrity of your application.
You should uninstall the mutaus-manasis-butysd package immediately and check for any dependencies that may rely on it.
Yes, you can use Vulert to monitor your project for open-source vulnerabilities in real-time using just your package-lock.json file.
You can check if your application is affected by visiting the Vulert playground at Vulert Scanner, where you can analyze your project without any signup.