Malicious Code Injection in yuda-12 Package: A Threat to npm Users

yuda-12 Updated 26 Nov 2025

Summary

12/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-170579: Malicious code in yuda-12 (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The yuda-12 package is part of the npm ecosystem and is associated with the tea.xyz token reward campaign. This package is designed to facilitate the automatic generation and publication of derivative packages, which can inflate developer reputation scores for token rewards. However, it has been identified as containing malicious code that compromises the integrity of the npm registry.

Vulnerability Detail

The vulnerability in the yuda-12 package originates from its malicious payload, which modifies the package.json file by removing private flags and altering version numbers. It generates random package names, often themed around Indonesian culture, and continuously republishes these variants to pollute the npm registry. This behavior can lead to a significant increase in spam packages, potentially affecting developers' workflows and the overall health of the npm ecosystem.

How To Fix

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

npm uninstall yuda-12

If it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.

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Workaround

As a temporary workaround, you can remove the yuda-12 package from your project by executing the command: 'npm uninstall yuda-12'. This will prevent any malicious code from executing until a fix is applied.

Conclusion

The yuda-12 package poses a significant risk due to its malicious code that alters package metadata and floods the npm registry with spam. It is crucial for developers to take immediate action by uninstalling the package and monitoring their projects for vulnerabilities. Utilizing tools like Vulert can help maintain the security of your software.

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FAQ

The yuda-12 package is an npm package associated with the tea.xyz token reward campaign, designed to generate and publish derivative packages automatically.

The malicious code modifies your package.json file, removes private flags, and generates spam packages, which can clutter your npm registry and affect your project's integrity.

You should uninstall the yuda-12 package immediately and check for any updates or patches that may address the vulnerability.

You can use Vulert, which monitors and alerts for open-source vulnerabilities in your software by analyzing your package-lock.json file. You can check your application for vulnerabilities using the Vulert playground without any signup.

Regularly audit your dependencies, use tools like Vulert for real-time monitoring, and stay updated with the latest security patches for your packages.

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How To Fix

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

npm uninstall yuda-12

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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