Malicious Code Injection in funny_monkey_z3n Package
Summary
MAL-2025-102990: Malicious code in funny_monkey_z3n (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The funny_monkey_z3n package is part of the npm ecosystem, which is widely used for JavaScript package management. This package, like many others in the npm registry, is intended to facilitate the development of applications by providing reusable code. However, it has been identified as part of a malicious campaign that aims to inflate developer reputation scores through the creation of numerous derivative packages. This vulnerability poses a significant risk to developers who may unknowingly include this package in their projects.
Vulnerability Detail
The vulnerability stems from the package being associated with a malicious campaign that modifies the package.json file to remove private flags, changes version numbers, and generates random package names. This behavior is designed to pollute the npm registry and can lead to unintended consequences for developers, such as the inclusion of malicious code in their applications. The malicious payload can compromise the integrity of the software supply chain, making it essential for developers to be vigilant about the packages they use.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall funny_monkey_z3nIf it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.
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Workaround
As a temporary measure, you can avoid using the funny_monkey_z3n package altogether and look for alternative packages that provide similar functionality without the associated risks. Additionally, consider using tools like Vulert to monitor your package dependencies for vulnerabilities. You can check if your application is affected by this vulnerability using the Vulert playground at https://vulert.com/scanner without any signup.
Conclusion
The funny_monkey_z3n package poses a significant risk due to its malicious code injection capabilities. Developers should take immediate action to remove this package and monitor their dependencies for vulnerabilities. Utilizing tools like Vulert can help maintain the security of your applications.
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FAQ
The funny_monkey_z3n package is an npm package that has been identified as part of a malicious campaign aimed at inflating developer reputation scores.
The vulnerability can lead to the inclusion of malicious code in your application, compromising its integrity and security.
You should uninstall the funny_monkey_z3n package immediately and look for secure alternatives.
You can use tools like Vulert, which monitors your package-lock.json file for open-source vulnerabilities in real-time.
Yes, you can use the Vulert playground at Vulert Scanner to check for vulnerabilities without any signup.
