Malicious Code Exploit in Joko-Tahu99-Breki Package: npm Vulnerability Overview
Summary
MAL-2025-73784: Malicious code in joko-tahu99-breki (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The 'joko-tahu99-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 modifies package configurations and republishes variants to pollute the npm registry.
Vulnerability Detail
The vulnerability originates from the package's design to include autopublish scripts that alter the package.json file by removing private flags and changing version numbers. This malicious behavior leads to the generation of random package names, which can clutter the npm registry and potentially compromise the integrity of the ecosystem. The continuous republishing of these variants can mislead developers and users, affecting their trust in legitimate packages.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall joko-tahu99-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, you can prevent the installation of the 'joko-tahu99-breki' package by using npm's package-lock.json file to monitor dependencies. Ensure that your project does not include this package in any of its dependencies.
Conclusion
The 'joko-tahu99-breki' package has been identified as containing malicious code that poses a significant risk to the npm ecosystem. It is crucial for developers to remove this package from their projects and monitor their dependencies for similar vulnerabilities. Utilizing tools like Vulert can help maintain the security of your software.
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FAQ
The 'joko-tahu99-breki' package is an npm package associated with the tea.xyz token reward campaign, designed to automate the publication of derivative packages.
This vulnerability can lead to the pollution of the npm registry, potentially compromising the integrity of your project's dependencies and affecting developer trust.
If you have installed the 'joko-tahu99-breki' package, you should uninstall it immediately using 'npm uninstall joko-tahu99-breki' and check for any affected dependencies.
Yes, you can use Vulert, which monitors and alerts in real-time 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 requiring any signup.
