Malicious Code Injection in teagood-yakuza12: A Threat to npm Ecosystem
Summary
MAL-2025-167968: Malicious code in teagood-yakuza12 (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
teagood-yakuza12 is an npm package that is part of the tea.xyz token reward campaign, which has been associated with a surge of malicious packages in the npm registry. This package is designed to manipulate the npm ecosystem by generating and publishing derivative packages with randomized names, aimed at inflating developer reputation scores for token rewards. Its functionality is compromised by the presence of malicious scripts that alter package metadata.
Vulnerability Detail
The vulnerability in teagood-yakuza12 originates from its 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 by inflating the reputation scores of malicious actors. The malicious payload is embedded in autopublish scripts that automate the creation and publication of these harmful packages.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall teagood-yakuza12If 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 this package by using npm's package-lock.json to monitor dependencies. Ensure that your project does not include teagood-yakuza12 in its dependencies. You can also use tools like Vulert to monitor your project for vulnerabilities in real-time without requiring code access or installation.
Conclusion
The presence of malicious code in the teagood-yakuza12 package poses a significant threat to the npm ecosystem. It is essential for developers to be vigilant and take immediate action to remove affected packages and monitor their projects for vulnerabilities. Utilizing tools like Vulert can aid in maintaining the security of your applications.
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FAQ
teagood-yakuza12 is an npm package associated with the tea.xyz token reward campaign, known for flooding the npm registry with malicious packages.
The vulnerability can lead to the pollution of the npm registry and may inflate the reputation scores of malicious actors, potentially compromising the integrity of your project's dependencies.
You should uninstall the package immediately using 'npm uninstall teagood-yakuza12' and review your project's dependencies for any other malicious packages.
You can use Vulert, which monitors your package-lock.json file to alert you in real-time for open-source vulnerabilities without requiring code access or installation.
Yes, you can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without any signup.
