Malicious Code Injection in ultimate_orca_z3n: A Threat to npm Packages

ultimate_orca_z3n Updated 27 Nov 2025

Summary

11/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-97080: Malicious code in ultimate_orca_z3n (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The package 'ultimate_orca_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 exploit npm's publishing capabilities. It is designed to generate and publish derivative packages with randomized names, thereby inflating developer reputation scores for token rewards in the tea.xyz protocol.

Vulnerability Detail

The vulnerability stems from the presence of malicious code within the 'ultimate_orca_z3n' 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. This behavior not only pollutes the npm registry but also poses a risk to developers who may unknowingly use these compromised packages, potentially leading to security breaches and loss of trust in the npm ecosystem.

How To Fix

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

npm uninstall ultimate_orca_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 measure, you can avoid using the 'ultimate_orca_z3n' package and seek alternative packages that provide similar functionality without the associated risks. Additionally, consider using tools like Vulert to monitor your dependencies for vulnerabilities.

Conclusion

The 'ultimate_orca_z3n' package has been identified as a malicious entity within the npm ecosystem, posing significant risks to developers and their applications. It is crucial to remove this package and monitor your dependencies for vulnerabilities using tools like Vulert to maintain the security and integrity of your projects.

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FAQ

The malicious code can lead to the pollution of the npm registry and may compromise the security of applications that use this package.

You can use Vulert's playground at Vulert Scanner to check if your application is affected without any signup.

You should uninstall the package immediately using 'npm uninstall ultimate_orca_z3n' and look for alternative packages.

While specific alternatives depend on the functionality you need, consider searching the npm registry for similar packages that do not have known vulnerabilities.

Vulert uses your package-lock.json file to monitor and alert you in real-time for open-source vulnerabilities in your software, ensuring you stay informed about potential risks.

How To Fix

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

npm uninstall ultimate_orca_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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