Malicious Code Injection in right_zebra_dumbs Package - npm Vulnerability

right_zebra_dumbs Updated 18 Nov 2025

Summary

11/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-108106: Malicious code in right_zebra_dumbs (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The right_zebra_dumbs package 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 the npm registry by flooding it with derivative packages. These packages are designed to inflate developer reputation scores for token rewards, making them a significant concern for developers relying on npm for secure package management.

Vulnerability Detail

The vulnerability in the right_zebra_dumbs package stems from its involvement in the tea.xyz token reward campaign. The package contains malicious scripts that modify the package.json file to remove private flags, alter version numbers, and generate 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 also lead to unauthorized access and manipulation of the developer's environment.

How To Fix

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

npm uninstall right_zebra_dumbs

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 right_zebra_dumbs package and replace it with a trusted alternative. Additionally, regularly audit your npm packages using tools like npm audit to identify and address vulnerabilities in your dependencies.

Conclusion

The right_zebra_dumbs package poses a significant security risk due to its malicious behavior aimed at manipulating the npm registry. Developers should take immediate action to remove this package and monitor their dependencies for any vulnerabilities. Utilizing tools like Vulert can enhance your security posture by providing real-time alerts for open-source vulnerabilities.

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FAQ

The right_zebra_dumbs package 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.

This vulnerability can lead to the pollution of the npm registry, potentially compromising the integrity of your application and exposing it to security risks.

If you have installed the right_zebra_dumbs package, you should uninstall it immediately and check for any other affected dependencies in your project.

Yes, tools like Vulert can help monitor your project for open-source vulnerabilities in real-time using just the package-lock.json file.

You can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.

How To Fix

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

npm uninstall right_zebra_dumbs

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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