Malicious Code Injection in dull_jay_z3n Package - npm Vulnerability
Summary
MAL-2025-94133: Malicious code in dull_jay_z3n (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The dull_jay_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 automatic 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.
Vulnerability Detail
The vulnerability in the dull_jay_z3n package stems from its inclusion in a series of malicious packages that utilize autopublish scripts. These scripts modify the package.json file to remove private flags, alter version numbers, and generate random package names, leading to the pollution of the npm registry. This behavior can result in significant security risks, including unauthorized access to sensitive data and the potential for further exploitation of affected systems.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall dull_jay_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 prevent the installation of the affected package by using npm's package-lock.json to lock dependencies. Additionally, consider using the following command to uninstall the package: npm uninstall dull_jay_z3n.
Conclusion
The dull_jay_z3n package has been identified as containing malicious code that poses a significant security risk. It is crucial to remove this package from your project and monitor your dependencies for any vulnerabilities. Utilizing tools like Vulert can help maintain the security of your applications.
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FAQ
dull_jay_z3n is an npm package associated with the tea.xyz token reward campaign, designed to automate the publication of derivative packages.
The vulnerability can lead to unauthorized modifications of your package.json file, potentially exposing your application to further security risks.
You should immediately uninstall the dull_jay_z3n package and check for any unauthorized changes in your project.
Yes, you can use Vulert, which monitors and alerts for open-source vulnerabilities in your software using just package-lock.json.
You can use the Vulert playground at Vulert Scanner to check if your application is affected without needing to sign up.
