Malicious Code Vulnerability in weekly_guanaco_0xrequest Package
Summary
MAL-2025-110796: Malicious code in weekly_guanaco_0xrequest (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The weekly_guanaco_0xrequest package is part of the npm ecosystem, which is widely used for JavaScript package management. This package, like many others, is intended to facilitate the development of applications by providing reusable code. However, it has been identified as part of a malicious campaign that aims to manipulate the npm registry and inflate developer reputation scores through the creation of derivative packages.
Vulnerability Detail
The vulnerability originates from the package being involved in a token reward campaign that floods the npm registry with malicious packages. These packages contain scripts designed to automatically modify the package.json file by removing private flags, changing version numbers, and generating random package names. This behavior leads to the pollution of the npm registry, potentially compromising the integrity of other packages and applications that depend on it.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall weekly_guanaco_0xrequestIf 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 avoid using the weekly_guanaco_0xrequest package and look for alternative packages that provide similar functionality without the associated risks.
Conclusion
The weekly_guanaco_0xrequest package poses a significant risk due to its involvement in a malicious campaign that manipulates the npm registry. It is essential to remove this package from your projects and monitor for any vulnerabilities using tools like Vulert to ensure the security of your applications.
See every vulnerability recorded for weekly_guanaco_0xrequest →
FAQ
It is an npm package that has been identified as part of a malicious campaign to manipulate the npm registry.
The vulnerability can lead to the pollution of the npm registry, potentially compromising the integrity of your application and other packages that depend on it.
You should uninstall the package immediately using the command: npm uninstall weekly_guanaco_0xrequest.
No patches are available for the weekly_guanaco_0xrequest package, as it is recommended to remove it entirely.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time using just your package-lock.json file. You can check if your application is affected by this vulnerability using the Vulert playground at Vulert Scanner.
