Malicious Code Injection in Inappropriate Hummingbird 0xRequest Package

Summary

11/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-104050: Malicious code in inappropriate_hummingbird_0xrequest (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The Inappropriate Hummingbird 0xRequest package is part of a broader ecosystem within the npm registry, often associated with token reward campaigns. These packages are designed to enhance developer reputation scores through the automatic generation and publication of derivative packages. However, this functionality has been exploited, leading to significant vulnerabilities.

Vulnerability Detail

The vulnerability stems from malicious code embedded within the Inappropriate Hummingbird 0xRequest package. This code is part of a campaign that floods the npm registry with derivative packages, modifying the package.json file to remove private flags and change version numbers. The payload generates random package names and continuously republishes these variants, leading to pollution of the npm registry. This can result in compromised security for applications relying on affected packages, as they may inadvertently use these malicious versions.

How To Fix

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

npm uninstall inappropriate_hummingbird_0xrequest

If 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 Inappropriate Hummingbird 0xRequest package from your project by executing: npm uninstall inappropriate_hummingbird_0xrequest. This will prevent any malicious code from executing until a secure version is available.

Conclusion

The Inappropriate Hummingbird 0xRequest package poses a significant security risk due to embedded malicious code. It is crucial for developers to take immediate action by updating or removing the package and utilizing tools like Vulert to monitor for vulnerabilities in their applications.

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FAQ

It is an npm package associated with token reward campaigns that has been found to contain malicious code.

The malicious code can modify your package.json file, potentially leading to the use of compromised packages and security vulnerabilities.

You should uninstall the package immediately and monitor for any updates or patches that address the vulnerability.

Yes, you can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time using just your package-lock.json file.

You can visit the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without any signup.

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How To Fix

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

npm uninstall inappropriate_hummingbird_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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