Malicious Code Vulnerability in natural_blackbird_requirement Package

Summary

11/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-95595: Malicious code in natural_blackbird_requirement (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The natural_blackbird_requirement package is part of the npm ecosystem, which is widely used for JavaScript development. This package is designed to provide specific functionalities related to natural language processing. However, it has been identified as part of a malicious campaign that floods the npm registry with harmful packages, aimed at inflating developer reputation scores through automated scripts.

Vulnerability Detail

The vulnerability originates from the malicious code embedded within the natural_blackbird_requirement 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 ramifications include potential exposure of sensitive information, pollution of the npm registry, and disruption of the development environment for users relying on this package.

How To Fix

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

npm uninstall natural_blackbird_requirement

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 natural_blackbird_requirement package from your project by executing: npm uninstall natural_blackbird_requirement. This will prevent any malicious code from executing while you seek a secure alternative or wait for an official patch.

Conclusion

The natural_blackbird_requirement package has been identified as containing malicious code that poses significant risks to users and the npm ecosystem. It is crucial to take immediate action by updating or removing the package to mitigate these risks. Utilizing tools like Vulert can help in monitoring and managing vulnerabilities effectively.

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FAQ

It is an npm package used for specific functionalities in JavaScript development, particularly in natural language processing.

The vulnerability can lead to the exposure of sensitive information and the pollution of the npm registry, affecting the integrity of your project.

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

Yes, you can use Vulert to monitor and alert you in real-time for open-source vulnerabilities in your software without requiring code access or installation.

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

How To Fix

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

npm uninstall natural_blackbird_requirement

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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