Malicious Code Injection in visual_sheep_z3n: A Threat to npm Packages
Summary
MAL-2025-110587: Malicious code in visual_sheep_z3n (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The package visual_sheep_z3n is part of the npm ecosystem, which is widely used for JavaScript package management. This package, like many others, is intended to facilitate development by providing reusable code. However, it has been identified as part of a malicious campaign that exploits npm's publishing capabilities, leading to potential security risks for developers and their applications.
Vulnerability Detail
The vulnerability in visual_sheep_z3n originates from its association with the tea.xyz token reward campaign, which has been flooding npm with malicious packages. These packages contain scripts designed to automatically generate and publish derivative packages with randomized names, effectively polluting the npm registry. The malicious payload modifies the package.json file to remove private flags, alters version numbers, and continuously republishes variants, which can lead to reputation inflation and potential security breaches for users relying on these packages.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall visual_sheep_z3nIf it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.
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Workaround
As a temporary workaround, avoid using the visual_sheep_z3n package and consider using alternative packages that provide similar functionality without the associated risks. Regularly audit your dependencies using tools like npm audit to identify and mitigate vulnerabilities.
Conclusion
The visual_sheep_z3n package poses a significant security risk due to its malicious nature. Developers should take immediate action to remove this package and monitor their applications for vulnerabilities. Utilizing tools like Vulert can help maintain the security of your projects by providing real-time alerts for open-source vulnerabilities.
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FAQ
visual_sheep_z3n is an npm package that is part of a malicious campaign aimed at exploiting the npm registry.
This vulnerability can lead to the injection of malicious code into your application, potentially compromising its security and integrity.
You should uninstall the package immediately using 'npm uninstall visual_sheep_z3n' and audit your project for other vulnerabilities.
You can use tools like Vulert, which monitors your package-lock.json for open-source vulnerabilities in real-time without requiring code access.
Yes, you can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without signing up.
