Malicious Code Injection in clean_mouse_0xrequest Package
Summary
MAL-2025-100588: Malicious code in clean_mouse_0xrequest (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The clean_mouse_0xrequest package is part of the npm ecosystem, primarily used for various JavaScript functionalities. However, it has been identified as part of a malicious campaign that floods the npm registry with derivative packages. This package, like others in the campaign, is designed to inflate developer reputation scores through automated publishing scripts.
Vulnerability Detail
The vulnerability in the clean_mouse_0xrequest package stems from its association with a malicious campaign that modifies the package.json file to remove private flags, alters version numbers, and generates random package names. This behavior not only compromises the integrity of the package but also pollutes the npm registry, potentially leading to security risks for developers who unknowingly use these compromised packages. The malicious payload is executed through scripts that continuously republish variants, making it difficult to track and mitigate the issue.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall clean_mouse_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 clean_mouse_0xrequest package and look for alternative packages that provide similar functionality without the associated risks. Additionally, you can monitor your package-lock.json file for any unauthorized changes.
Conclusion
The clean_mouse_0xrequest package poses a significant risk due to its malicious code that alters package metadata and floods the npm registry. It is crucial for developers to be aware of such vulnerabilities and take immediate action to protect their projects by uninstalling affected packages and monitoring for future vulnerabilities.
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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.
Using the clean_mouse_0xrequest package can compromise your project's integrity and expose it to security risks due to the malicious modifications made by the package.
You should uninstall the package immediately and check for any other potentially affected packages in your project.
You can use tools like Vulert, which monitors your package-lock.json for open-source vulnerabilities in real-time 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.
