Malicious Code Injection in yuni-tomat94-breki: A Threat to npm Packages
Summary
MAL-2025-76489: Malicious code in yuni-tomat94-breki (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The package yuni-tomat94-breki is part of the npm ecosystem, which is widely used for JavaScript package management. This package is associated with the tea.xyz token reward campaign, which has been known to flood the npm registry with malicious packages. These packages often contain scripts designed to manipulate package metadata and inflate developer reputation scores, posing a significant risk to users and the integrity of the npm registry.
Vulnerability Detail
The vulnerability in yuni-tomat94-breki originates from its involvement in a malicious campaign that modifies the package.json file to remove private flags, alters version numbers, and generates random package names. This behavior not only compromises the integrity of the affected package but also leads to the proliferation of derivative packages that can pollute the npm registry. The malicious payload can potentially allow attackers to execute arbitrary code or perform unauthorized actions within the affected environments.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall yuni-tomat94-brekiIf 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 yuni-tomat94-breki package from your project using the following command: npm uninstall yuni-tomat94-breki. Additionally, you can monitor your project for vulnerabilities using tools like Vulert, which analyzes your package-lock.json file for real-time alerts on open-source vulnerabilities.
Conclusion
The yuni-tomat94-breki package poses a significant threat due to its malicious code that alters package metadata and proliferates harmful derivatives. Users are advised to remove the package and monitor their projects for vulnerabilities. Utilizing tools like Vulert can help maintain the security of your applications.
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FAQ
yuni-tomat94-breki is an npm package that is part of a malicious campaign aimed at manipulating package metadata for token rewards.
This vulnerability can lead to unauthorized modifications of your package.json file, potentially allowing attackers to execute malicious code or publish harmful packages.
You should uninstall the package immediately and monitor your project for any signs of compromise.
Yes, you can use Vulert's playground to analyze your package-lock.json file for vulnerabilities without needing to sign up.
Regularly update your dependencies, use tools like Vulert for monitoring, and review package sources before installation.
