Malicious Code Injection in isolated_penguin_z3n Package
Summary
MAL-2025-104436: Malicious code in isolated_penguin_z3n (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The isolated_penguin_z3n package is part of the npm ecosystem and is associated with the tea.xyz token reward campaign. This package is designed to facilitate the generation and publication of derivative packages, which can inflate developer reputation scores for token rewards. However, it has been identified as containing malicious code that compromises its integrity and the security of applications using it.
Vulnerability Detail
The vulnerability in the isolated_penguin_z3n package originates from its association with a campaign that floods the npm registry with malicious packages. The malicious payload modifies the package.json file by removing private flags, altering version numbers, and generating random package names. This behavior not only pollutes the npm registry but can also lead to unintended consequences for developers who unknowingly use these compromised packages, potentially exposing their applications to further security risks.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall isolated_penguin_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, you can avoid using the isolated_penguin_z3n package and look for alternative packages that provide similar functionality without the associated risks. Additionally, regularly audit your package dependencies using tools like npm audit to identify and mitigate vulnerabilities.
Conclusion
The isolated_penguin_z3n package has been identified as containing malicious code that poses significant risks to applications using it. It is crucial to remove this package and monitor your dependencies for vulnerabilities to maintain the security of your projects.
See every vulnerability recorded for isolated_penguin_z3n →
FAQ
The isolated_penguin_z3n package is an npm package associated with the tea.xyz token reward campaign, designed to generate and publish derivative packages.
The vulnerability can lead to the pollution of the npm registry and may expose your application to further security risks if compromised packages are used.
You can use the Vulert platform to monitor and alert for open-source vulnerabilities in your software. Visit Vulert Scanner to check if your application is affected without requiring any signup.
If you have installed the isolated_penguin_z3n package, you should uninstall it immediately using 'npm uninstall isolated_penguin_z3n' and look for alternatives.
Yes, tools like Vulert can help monitor your dependencies for vulnerabilities in real-time, ensuring your applications remain secure.
