Malicious Code Injection in tight_puma_requirement: A Threat to npm Packages

tight_puma_requirement Updated 27 Nov 2025

Summary

11/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-97016: Malicious code in tight_puma_requirement (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The 'tight_puma_requirement' package is part of the npm ecosystem, which is widely used for JavaScript package management. This package, like many others, is intended to facilitate the development and deployment of applications by providing reusable code. However, it has been identified as part of a malicious campaign that exploits npm's publishing mechanisms, leading to significant security risks for developers and users alike.

Vulnerability Detail

The vulnerability in 'tight_puma_requirement' originates from its association with a malicious campaign that floods the npm registry with derivative packages. These packages contain scripts designed to automatically publish variants with altered names and metadata, effectively polluting the registry. The malicious payload modifies the package.json file to remove private flags, changes version numbers, and generates random names, which can mislead developers and compromise the integrity of their applications.

How To Fix

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

npm uninstall tight_puma_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, consider removing the 'tight_puma_requirement' package from your project until a secure version is available. You can do this by executing the command: 'npm uninstall tight_puma_requirement'. Additionally, monitor your package-lock.json file for any unauthorized changes.

Conclusion

The 'tight_puma_requirement' package poses a significant security risk due to its malicious code injection. Developers should take immediate action to remove the package and monitor their applications for any unauthorized changes. Utilizing tools like Vulert can help in maintaining the security of your projects.

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FAQ

It is an npm package used for JavaScript development, but it has been identified as part of a malicious campaign.

The vulnerability can lead to unauthorized modifications in your application's dependencies, potentially compromising security and functionality.

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

You can use tools like Vulert, which monitors your package-lock.json for open-source vulnerabilities in real-time without requiring code access.

Yes, you can use the Vulert playground at Vulert Scanner to check for vulnerabilities in your application 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 tight_puma_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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