Malicious Code Injection in ratty_fish_0xrequest: A Threat to npm Packages

ratty_fish_0xrequest Updated 18 Nov 2025

Summary

11/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-107734: Malicious code in ratty_fish_0xrequest (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The ratty_fish_0xrequest package is part of the npm ecosystem, typically used for various JavaScript functionalities. However, it has been identified as part of a malicious campaign that exploits npm's package publishing system. This package is linked to the tea.xyz token reward initiative, which has been flooding the npm registry with derivative packages to manipulate developer reputation scores.

Vulnerability Detail

The vulnerability stems from the presence of malicious code within the ratty_fish_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 ratty_fish_0xrequest

If 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 measure, you can avoid using the ratty_fish_0xrequest package and look for alternative packages that provide similar functionality without the associated risks. Additionally, you can use the following command to uninstall the package: npm uninstall ratty_fish_0xrequest.

Conclusion

The ratty_fish_0xrequest package poses a significant threat due to its malicious code that alters package metadata and floods the npm registry. It is essential to remove this package and monitor your applications for vulnerabilities to ensure security.

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FAQ

It is an npm package that has been identified as part of a malicious campaign to manipulate developer reputation scores.

The vulnerability can lead to the pollution of the npm registry, potentially exposing your application to further malicious packages and compromising its integrity.

You should uninstall the ratty_fish_0xrequest package immediately and monitor for any updates or patches.

You can use Vulert, which monitors and alerts in real-time for open-source vulnerabilities using just your package-lock.json file. You can also check your application against known vulnerabilities using the Vulert playground.

Yes, you can use the Vulert playground at Vulert Scanner to check for vulnerabilities in your application without requiring any signup.

How To Fix

This package is malicious. Remove it and rotate any credentials it could have accessed.

npm uninstall ratty_fish_0xrequest

If 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 →

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