Malicious Code Injection in teagood-yakuza50: A Threat to npm Ecosystem
Summary
MAL-2025-168009: Malicious code in teagood-yakuza50 (npm). Affected versions are not published. No fix is published. How to fix ↓
Check if this vulnerability affects your application
Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.
No signup required · Results in about 60 seconds
Background
teagood-yakuza50 is an npm package that is part of the tea.xyz token reward campaign. This package is designed to facilitate token rewards by generating and publishing derivative packages. However, it has been identified as containing malicious code that can compromise the integrity of the npm registry and the applications that depend on it.
Vulnerability Detail
The vulnerability in teagood-yakuza50 originates from its design to automatically generate and publish derivative packages with randomized names. This malicious behavior includes modifying the package.json file to remove private flags, changing version numbers, and continuously republishing variants to pollute the npm registry. The ramifications include potential security risks for developers who unknowingly use these compromised packages, leading to reputation inflation and the spread of malicious code within the ecosystem.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall teagood-yakuza50If it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.
Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →
Workaround
As a temporary workaround, you can avoid using the teagood-yakuza50 package and any other packages associated with the tea.xyz token reward campaign. Additionally, consider using a tool like Vulert to monitor your package-lock.json file for vulnerabilities. You can access the Vulert playground at https://vulert.com/scanner to check if your application is affected by this vulnerability without any signup.
Conclusion
The discovery of malicious code in the teagood-yakuza50 package highlights the importance of vigilance in managing npm dependencies. By understanding the nature of this vulnerability and taking proactive steps to mitigate risks, developers can protect their applications and maintain the integrity of the npm ecosystem.
See every vulnerability recorded for teagood-yakuza50 →
FAQ
teagood-yakuza50 is an npm package associated with the tea.xyz token reward campaign, designed to generate and publish derivative packages.
The vulnerability can lead to the introduction of malicious code into your application, compromising its security and integrity.
You should uninstall the package immediately using 'npm uninstall teagood-yakuza50' and monitor your project for any other affected packages.
Yes, regularly audit your dependencies using tools like Vulert and stay updated on security advisories related to the packages you use.
Yes, you can use the Vulert playground at Vulert Scanner to check your application for vulnerabilities by simply uploading your package-lock.json file.
