Malicious Code Injection in yeasty_mosquito_0xrequest Package
Summary
MAL-2025-111283: Malicious code in yeasty_mosquito_0xrequest (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The yeasty_mosquito_0xrequest package is part of the npm ecosystem, often used for various JavaScript applications. However, it has been identified as part of a malicious campaign that floods the npm registry with derivative packages. These packages are designed to inflate developer reputation scores through automated publishing scripts, which can lead to significant issues in the integrity of the npm ecosystem.
Vulnerability Detail
The vulnerability in the yeasty_mosquito_0xrequest package stems from its involvement in a malicious campaign that modifies the package.json file to remove private flags and changes version numbers. It generates random package names, often themed around Indonesian culture, and continuously republishes these variants to pollute the npm registry. This not only affects the reputation of developers but also poses a risk of introducing harmful code into applications that depend on these packages.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall yeasty_mosquito_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 yeasty_mosquito_0xrequest package altogether and look for alternative packages that provide similar functionality without the associated risks. Additionally, you can monitor your dependencies using tools like Vulert, which alerts you to vulnerabilities in real-time based on your package-lock.json.
Conclusion
The yeasty_mosquito_0xrequest package poses a significant risk due to its involvement in a malicious campaign that alters package metadata and floods the npm registry. It is crucial for developers to remove this package and monitor their dependencies to maintain application security.
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FAQ
It is an npm package that has been identified as part of a malicious campaign to inflate developer reputation scores through automated publishing.
The vulnerability can lead to the introduction of malicious code into your application, compromising its security and integrity.
You should uninstall the package immediately and check your project for any references to it in your package-lock.json file.
Yes, you can use Vulert to monitor your package-lock.json for open-source vulnerabilities in real-time without needing to access the code.
You can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without any signup.
