Malicious Code Injection in teagood-yakuza89 Package
Summary
MAL-2025-168051: Malicious code in teagood-yakuza89 (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The teagood-yakuza89 package is part of a series of npm packages associated with the tea.xyz token reward campaign. These packages are designed to automate the generation and publication of derivative packages, often with randomized names, to inflate developer reputation scores for token rewards. The package's functionality is compromised by malicious scripts that alter its metadata and behavior.
Vulnerability Detail
The vulnerability in the teagood-yakuza89 package stems from malicious code that modifies the package.json file to remove private flags, changes version numbers, and generates random package names. This behavior leads to the continuous republishing of variants, which pollutes the npm registry and can potentially harm developers' reputations and the integrity of the npm ecosystem. The malicious payload is part of a broader trend of automated scripts designed to exploit the npm registry.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall teagood-yakuza89If it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.
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Workaround
As a workaround, you can manually delete the teagood-yakuza89 package from your node_modules directory and remove it from your package.json file. Use the following command to uninstall it: npm uninstall teagood-yakuza89.
Conclusion
The teagood-yakuza89 package poses a significant risk due to its malicious code that alters package metadata and floods the npm registry with unwanted variants. It is crucial to remove this package and monitor your projects for vulnerabilities to maintain the integrity of your software development environment.
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FAQ
teagood-yakuza89 is an npm package associated with the tea.xyz token reward campaign, designed to automate the publication of derivative packages.
The malicious code modifies your package.json, removes private flags, and generates random package names, which can lead to reputation damage and registry pollution.
You should uninstall the teagood-yakuza89 package immediately 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 check your application for vulnerabilities using the Vulert playground without any signup.
Regularly audit your dependencies, use tools like Vulert for real-time monitoring, and stay informed about known vulnerabilities in the packages you use.
