Malicious Code Injection in jackmiller Package: npm Vulnerability Overview
Summary
MAL-2025-171374: Malicious code in jackmiller (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The jackmiller package is part of the npm ecosystem and is associated with the tea.xyz token reward campaign. It is designed to facilitate various functionalities, but it has been compromised to include malicious scripts that can harm developers and the integrity of the npm registry. The package's primary attributes include its ability to generate and publish derivative packages, which are now exploited for malicious purposes.
Vulnerability Detail
The vulnerability in the jackmiller package originates from its involvement in a campaign that floods the npm registry with malicious packages. These packages contain scripts that automatically modify the package.json file, removing private flags and changing version numbers. They generate random package names, often themed around Indonesian culture, and continuously republish variants to pollute the npm registry. This not only affects the reputation of developers but also compromises 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 jackmillerIf 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 remove the jackmiller package from your project by executing the command: npm uninstall jackmiller. This will prevent any malicious scripts from executing until a secure version is available.
Conclusion
The jackmiller package has been identified as containing malicious code that compromises the integrity of the npm registry. It is crucial for developers to take immediate action by uninstalling the package and monitoring their projects for vulnerabilities. Utilizing tools like Vulert can help ensure ongoing security.
See every vulnerability recorded for jackmiller →
FAQ
The jackmiller package is an npm package that has been compromised to include malicious code as part of a token reward campaign.
The vulnerability can lead to the modification of your package.json file, potentially exposing your project to further risks and affecting your developer reputation.
You should uninstall the jackmiller package immediately and monitor your project for any unusual activity.
Yes, you can use Vulert, which monitors and alerts for open-source vulnerabilities in your software by analyzing your package-lock.json file.
You can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.
