Malicious Code Injection in dominant_owl_z3n: A Threat to npm Packages

dominant_owl_z3n Updated 27 Nov 2025

Summary

11/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-98687: Malicious code in dominant_owl_z3n (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The package 'dominant_owl_z3n' is part of the npm ecosystem, which is widely used for JavaScript package management. This package has been identified as part of a malicious campaign that aims to inflate developer reputation scores through the creation and publication of derivative packages. The campaign exploits npm's publishing capabilities, leading to potential security risks for developers and users relying on these packages.

Vulnerability Detail

The vulnerability in 'dominant_owl_z3n' originates from its association with a malicious campaign that modifies the package.json file to remove private flags, alters version numbers, and generates random package names. This behavior leads to the continuous republishing of variants, polluting the npm registry and potentially compromising the integrity of applications that depend on these packages. The malicious payload can result in unauthorized access, data leakage, or other security breaches.

How To Fix

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

npm uninstall dominant_owl_z3n

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 'dominant_owl_z3n' package and replace it with a secure alternative. Always validate the packages you intend to use by checking their source and reputation within the community.

Conclusion

The 'dominant_owl_z3n' package poses a significant security risk due to its malicious code injection. Developers should take immediate action to remove this package and utilize tools like Vulert for ongoing monitoring of vulnerabilities in their applications. Staying informed and proactive is essential for maintaining application security.

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FAQ

The primary risk is the potential for malicious code execution, which can compromise application security and lead to unauthorized access.

You can use Vulert to monitor your application for vulnerabilities. By analyzing your package-lock.json file, Vulert provides real-time alerts for any open-source vulnerabilities.

Immediately uninstall the 'dominant_owl_z3n' package using 'npm uninstall dominant_owl_z3n' and review your project's dependencies for any other potentially malicious packages.

Yes, tools like Vulert can help you monitor and alert for open-source vulnerabilities in your software without requiring code access or installation.

Yes, 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 dominant_owl_z3n

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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