Malicious Code Injection in joko-lutis20-breki Package
Summary
MAL-2025-73734: Malicious code in joko-lutis20-breki (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The joko-lutis20-breki 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 and the security of the npm registry.
Vulnerability Detail
The vulnerability originates from the package's malicious payload, which 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, polluting the npm registry and potentially affecting other developers and users relying on legitimate packages. The malicious scripts included in the package are designed to automate these processes, making it difficult to track and mitigate the issue.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall joko-lutis20-brekiIf it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.
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Workaround
As a temporary workaround, avoid using the joko-lutis20-breki package and monitor your project for any dependencies that may have inadvertently included it. You can also use tools like Vulert to monitor your package-lock.json for vulnerabilities. To check if your application is affected by this vulnerability, you can visit the Vulert playground at https://vulert.com/scanner without any signup.
Conclusion
The joko-lutis20-breki package has been identified as containing malicious code that compromises the integrity of the npm registry. It is crucial for developers to uninstall this package and monitor their projects for vulnerabilities. Utilizing tools like Vulert can help in maintaining the security of your applications.
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FAQ
The joko-lutis20-breki package is an npm package associated with the tea.xyz token reward campaign, designed to automate the generation and publication of derivative packages.
The malicious code modifies your package.json file, removes private flags, and continuously republishes variants, which can lead to pollution of the npm registry and potential security risks.
You should uninstall the package immediately using the command npm uninstall joko-lutis20-breki and ensure that you do not reinstall it.
Yes, you can use Vulert to monitor your package-lock.json file for vulnerabilities in real-time without requiring access to the code or installation.
You can check if your application is affected by visiting the Vulert playground at Vulert Scanner, where you can analyze your dependencies without signing up.
