Malicious Code Injection in polymeria-butyis: A Threat to npm Packages
Summary
MAL-2025-164494: Malicious code in polymeria-butyis (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The 'polymeria-butyis' package is part of the npm ecosystem, often used for various development tasks. However, it has been identified as part of a malicious campaign that aims to inflate developer reputation scores through the creation of derivative packages. This package is associated with the tea.xyz token reward scheme, which has led to the proliferation of harmful scripts that manipulate package metadata.
Vulnerability Detail
The vulnerability in 'polymeria-butyis' originates from its involvement in a malicious campaign that modifies the package.json file to remove private flags and alters version numbers. It generates random package names, primarily themed around Indonesian culture, and continuously republishes these variants to clutter the npm registry. This not only affects the integrity of the npm ecosystem but also poses risks to developers who may unknowingly use these compromised packages.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall polymeria-butyisIf 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 'polymeria-butyis' package until a secure version is released. Additionally, consider using alternative packages that provide similar functionality without the associated risks.
Conclusion
The 'polymeria-butyis' package presents a significant security risk due to its involvement in a malicious campaign that alters package metadata and floods the npm registry. It is essential for developers to stay informed about such vulnerabilities and take proactive measures to secure their projects.
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FAQ
'polymeria-butyis' is an npm package that has been linked to a malicious campaign aimed at inflating developer reputation scores.
This vulnerability can lead to the inclusion of malicious code in your project, potentially compromising its security and integrity.
If you have used 'polymeria-butyis', it is recommended to remove it from your project and update to a secure version or use an alternative package.
You can use tools like Vulert, which monitors your package-lock.json file to alert you in real-time for any open-source vulnerabilities.
Yes, you can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without requiring any signup.
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