Malicious Code Injection in fiscal_cow_0xrequest Package - npm Vulnerability
Summary
MAL-2025-102742: Malicious code in fiscal_cow_0xrequest (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The fiscal_cow_0xrequest package is part of the npm ecosystem, often utilized in JavaScript projects for various 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 of variants with randomized names.
Vulnerability Detail
The vulnerability stems from malicious code embedded within the fiscal_cow_0xrequest package. This code modifies the package.json file to remove private flags, alters version numbers, and generates random package names, leading to the continuous republishing of these variants. The primary risk includes the pollution of the npm registry, which can compromise the integrity of the ecosystem and potentially expose users to further malicious activities.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall fiscal_cow_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 remove the fiscal_cow_0xrequest package from your project by executing 'npm uninstall fiscal_cow_0xrequest'. This will prevent any malicious code from executing while you seek a secure alternative.
Conclusion
The fiscal_cow_0xrequest package poses a significant security risk due to its malicious code that alters project files and republishing behavior. It is crucial to take immediate action by updating or removing the package and utilizing tools like Vulert for ongoing vulnerability monitoring.
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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 malicious code modifies your package.json file, potentially leading to unauthorized package republishing and pollution of the npm registry.
You should uninstall the fiscal_cow_0xrequest package immediately and check for any unauthorized changes in your project.
Yes, you can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time using just your package-lock.json file.
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