Malicious Code Injection in international_fly_z3n Package
Summary
MAL-2025-95107: Malicious code in international_fly_z3n (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The international_fly_z3n package is part of the npm ecosystem, which is widely used for JavaScript package management. This package is suspected to be involved in a token reward campaign that has led to the proliferation of malicious packages. Its primary function is to facilitate the development and distribution of JavaScript applications, but it has been compromised to include harmful scripts that manipulate package metadata.
Vulnerability Detail
The vulnerability stems from malicious code embedded within the international_fly_z3n package. This code is designed to automatically modify the package.json file by removing private flags, altering version numbers, and generating random package names. This behavior not only inflates developer reputation scores for token rewards but also leads to pollution of the npm registry with numerous derivative packages. The origin of this issue is linked to a broader campaign that exploits npm's package management system, posing significant risks to developers and users relying on the integrity of the npm ecosystem.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall international_fly_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 prevent the installation of the international_fly_z3n package by using npm's package-lock.json file to lock your dependencies. Additionally, you can run the following command to audit your packages for vulnerabilities: npm audit.
Conclusion
The international_fly_z3n package has been compromised with malicious code that poses significant risks to developers and users. It is crucial to remove this package from your projects and monitor for updates or patches to ensure the security of your applications.
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FAQ
The international_fly_z3n package is a JavaScript package in the npm ecosystem that has been identified as containing malicious code.
The malicious code modifies your package.json file, potentially exposing your project to further vulnerabilities and polluting the npm registry.
You should remove the international_fly_z3n package from your project and check for any updates or patches.
You can use tools like Vulert, which monitors your package-lock.json file for 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.
