Malicious Code Detected in xaver-klipo89-kyuki Package - npm Vulnerability
Summary
MAL-2025-92365: Malicious code in xaver-klipo89-kyuki (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The xaver-klipo89-kyuki 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. The malicious nature of this package is linked to its involvement in the tea.xyz token reward scheme, which incentivizes the creation of numerous low-quality packages to inflate developer reputation scores.
Vulnerability Detail
The vulnerability in the xaver-klipo89-kyuki package stems from its malicious code that modifies the package.json file. This code removes private flags, alters version numbers, and generates random package names, which are often themed around Indonesian culture. The primary concern is that this package continuously republishes variants, polluting the npm registry and potentially compromising the integrity of other packages. This behavior can lead to security risks for developers who unknowingly depend on these malicious packages.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall xaver-klipo89-kyukiIf 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 avoid using the xaver-klipo89-kyuki package and any packages that depend on it. Additionally, consider using tools like Vulert to monitor your project for vulnerabilities. You can check if your application is affected by this vulnerability using the Vulert playground at https://vulert.com/scanner without any signup.
Conclusion
The xaver-klipo89-kyuki package poses a significant risk due to its malicious code that alters package metadata and floods the npm registry. It is essential for developers to take immediate action to remove this package and utilize tools like Vulert for ongoing monitoring of vulnerabilities in their projects.
See every vulnerability recorded for xaver-klipo89-kyuki →
FAQ
The xaver-klipo89-kyuki package is an npm package that has been identified as malicious, part of a campaign to flood the npm registry with low-quality packages.
This vulnerability can compromise the integrity of your project by introducing malicious code that modifies your package.json file and republishing variants to the npm registry.
You should uninstall the xaver-klipo89-kyuki package immediately and monitor your project for any other potentially malicious packages.
Yes, tools like Vulert can help monitor your project for open-source vulnerabilities in real-time using your package-lock.json file.
You can check if your application is affected by this vulnerability using the Vulert playground at Vulert Scanner without needing to sign up.
