Malicious Code Injection in logical_heron_z3n: A Threat to npm Packages

logical_heron_z3n Updated 27 Nov 2025

Summary

11/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-95304: Malicious code in logical_heron_z3n (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The package logical_heron_z3n is part of the npm ecosystem, which is widely used for managing JavaScript packages. This package is associated with the tea.xyz token reward campaign, which has been linked to a series of malicious activities aimed at inflating developer reputation scores. The package's functionality is compromised by the presence of malicious scripts that manipulate its metadata and behavior, posing a significant risk to developers and users relying on npm packages.

Vulnerability Detail

The vulnerability in logical_heron_z3n originates from its association with a malicious campaign that floods the npm registry with derivative packages. The malicious payload alters the package.json file by removing private flags, changing version numbers, and generating random package names. This behavior not only pollutes the npm registry but also compromises the integrity of the package, potentially leading to security risks for users who unknowingly install these variants.

How To Fix

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

npm uninstall logical_heron_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, avoid using the logical_heron_z3n package until it has been verified as safe. Regularly monitor your package dependencies and consider using tools like Vulert to check for vulnerabilities in your project. You can use Vulert's playground at https://vulert.com/scanner to assess if your application is affected by this vulnerability without needing to sign up.

Conclusion

The logical_heron_z3n package presents a significant security risk due to its association with malicious activities aimed at manipulating the npm registry. Developers should take immediate action to remove this package and monitor their dependencies for vulnerabilities. Utilizing tools like Vulert can help maintain the security of your applications.

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FAQ

logical_heron_z3n is an npm package that has been identified as part of a malicious campaign aimed at inflating developer reputation scores through the creation of derivative packages.

The vulnerability can lead to the installation of malicious packages that may compromise your application's security and integrity, potentially exposing sensitive data or introducing other vulnerabilities.

If you have installed logical_heron_z3n, you should uninstall it immediately using the command: npm uninstall logical_heron_z3n.

You can use tools like Vulert, which monitors your package-lock.json file to alert you in real-time about open-source vulnerabilities in your software.

Yes, you can use Vulert's playground at Vulert Scanner to check if your application is affected by vulnerabilities without requiring any signup.

How To Fix

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

npm uninstall logical_heron_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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