Malicious Code Injection in surya-bakwan63-kyuki Package: A Threat to npm Users

surya-bakwan63-kyuki Updated 27 Nov 2025

Summary

11/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-90813: Malicious code in surya-bakwan63-kyuki (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The surya-bakwan63-kyuki package is part of the npm ecosystem, primarily used for JavaScript development. It is associated with the tea.xyz token reward campaign, which has been known to flood the npm registry with various packages. This package, like others in the campaign, is designed to manipulate npm's publishing system, potentially affecting developers' reputations and the integrity of the npm registry.

Vulnerability Detail

The vulnerability in the surya-bakwan63-kyuki package stems from malicious code that modifies the package.json file. This code removes private flags, alters version numbers, and generates random package names, which are then republished to the npm registry. This behavior not only pollutes the registry but also poses a risk to developers who may unknowingly install these compromised packages, leading to further security issues.

How To Fix

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

npm uninstall surya-bakwan63-kyuki

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 avoid using the surya-bakwan63-kyuki package until a fix is released. Additionally, you can monitor your package-lock.json file for any unauthorized changes and revert them if necessary.

Conclusion

The surya-bakwan63-kyuki package poses a significant risk due to its malicious code that alters package metadata and repopulates the npm registry with compromised versions. It is crucial for developers to take immediate action by updating or removing the package to safeguard their projects.

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FAQ

It is an npm package associated with the tea.xyz token reward campaign, which has been linked to malicious activities in the npm registry.

The vulnerability can lead to the installation of compromised packages, which may introduce security risks and affect the integrity of your project.

You should update the package to the latest patched version or remove it from your project to mitigate the risk.

You can use tools like Vulert, which monitors your package-lock.json file for open-source vulnerabilities in real-time without requiring code access or installation.

Yes, you can use the Vulert playground at Vulert Scanner to check for vulnerabilities in your application without signing up.

How To Fix

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

npm uninstall surya-bakwan63-kyuki

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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