Malicious Code Injection in joni-keripik79-breki: A Threat to npm Users

joni-keripik79-breki Updated 12 Nov 2025

Summary

11/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-73803: Malicious code in joni-keripik79-breki (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The package joni-keripik79-breki is part of a broader campaign targeting npm users, where malicious packages are created to exploit the npm registry. These packages are often linked to token reward schemes that incentivize developers to inflate their reputation scores. The joni-keripik79-breki package specifically modifies essential files like package.json, making it a significant threat to developers relying on npm for package management.

Vulnerability Detail

The vulnerability in joni-keripik79-breki stems from its design to execute malicious scripts that alter the package.json file. This includes removing private flags, changing version numbers, and generating random package names, which can lead to the proliferation of derivative packages in the npm registry. The origin of this vulnerability is tied to the tea.xyz token reward campaign, which encourages the creation of such malicious packages to manipulate developer reputation scores. The ramifications include potential exposure of sensitive data, pollution of the npm registry, and a compromised development environment.

How To Fix

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

npm uninstall joni-keripik79-breki

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 prevent the execution of the malicious scripts by avoiding the installation of the joni-keripik79-breki package and monitoring your package.json file for unauthorized changes. Additionally, consider using tools like Vulert to monitor your project for vulnerabilities.

Conclusion

The joni-keripik79-breki package poses a significant threat to npm users due to its malicious design aimed at manipulating the npm registry. It is essential to remove this package and monitor your project for any unauthorized changes. Utilizing tools like Vulert can help in maintaining the security of your open-source dependencies.

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FAQ

joni-keripik79-breki is an npm package that has been identified as malicious, designed to exploit the npm registry and manipulate developer reputation scores.

The vulnerability can lead to unauthorized modifications of your package.json file, potentially exposing sensitive data and polluting the npm registry with malicious packages.

If you have installed joni-keripik79-breki, it is crucial to remove it immediately and monitor your project for any unauthorized changes.

Yes, you can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without requiring any signup.

To prevent similar vulnerabilities, regularly audit your dependencies, use tools like Vulert for real-time monitoring, and stay informed about known vulnerabilities in the packages you use.

How To Fix

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

npm uninstall joni-keripik79-breki

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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