Malicious Code Injection in right_worm_z3n Package: A Threat to npm Ecosystem
Summary
MAL-2025-108105: Malicious code in right_worm_z3n (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The right_worm_z3n package is part of the npm ecosystem, which is widely used for JavaScript package management. This package, like many others, is intended to facilitate the development and distribution of JavaScript applications. However, it has been identified as part of a malicious campaign that exploits npm's publishing capabilities to inflate developer reputation scores through the creation of derivative packages with randomized names.
Vulnerability Detail
The vulnerability in the right_worm_z3n package stems from its association with a malicious campaign that modifies the package.json file to remove private flags, alters version numbers, and generates random package names. This behavior leads to the continuous republishing of variants, which pollutes the npm registry and can compromise the integrity of the ecosystem. The malicious payload is designed to automate the creation and publication of these packages, making it difficult for developers to identify and mitigate the threat.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall right_worm_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 right_worm_z3n package by using npm's package-lock.json file to lock your dependencies. Additionally, you can monitor your project for vulnerabilities using tools like Vulert, which analyzes your package-lock.json file to alert you of any open-source vulnerabilities in real-time.
Conclusion
The right_worm_z3n package poses a significant threat to the npm ecosystem due to its malicious behavior. It is essential for developers to stay vigilant, update their dependencies, and utilize tools like Vulert to monitor for vulnerabilities. By taking proactive measures, you can help protect your projects from potential security risks.
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FAQ
The right_worm_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 pollution of the npm registry, making it difficult to trust the integrity of packages and potentially exposing your project to further security risks.
You should update the package to a patched version if available or remove it from your project to mitigate the risk.
You can use Vulert, which allows you to monitor and alert for open-source vulnerabilities in your software by analyzing your package-lock.json file.
Yes, you can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.
