Malicious Code Injection in cautious_narwhal-appteadev Package

cautious_narwhal-appteadev Updated 24 Nov 2025

Summary

11/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-100296: Malicious code in cautious_narwhal-appteadev (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The cautious_narwhal-appteadev package is part of the npm ecosystem, often utilized in various JavaScript applications. It is designed to facilitate development tasks but has been compromised. This package has been linked to a token reward campaign that exploits npm's publishing system, leading to the proliferation of malicious variants.

Vulnerability Detail

The vulnerability originates from the package being part of a malicious campaign that floods the npm registry with derivative packages. It contains scripts that modify the package.json file to remove private flags, alter version numbers, and generate random package names. This behavior can lead to the pollution of the npm registry and potentially compromise the integrity of applications relying on this package.

How To Fix

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

npm uninstall cautious_narwhal-appteadev

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 workaround, you can avoid using the cautious_narwhal-appteadev package and look for alternative packages that provide similar functionality without the associated risks.

Conclusion

The cautious_narwhal-appteadev package has been identified as containing malicious code that can compromise applications. It is essential to remove this package and monitor for any updates or patches. Utilizing tools like Vulert can help in maintaining the security of your projects.

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FAQ

It is an npm package that has been compromised and is part of a malicious campaign to inflate developer reputation scores.

The vulnerability can lead to the pollution of the npm registry and may compromise the integrity of your application if it relies on the affected package.

You should uninstall the package immediately using npm uninstall cautious_narwhal-appteadev and look for alternatives.

Currently, there is no patched version available. It is recommended to remove the package until a secure version is released.

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

How To Fix

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

npm uninstall cautious_narwhal-appteadev

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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