Critical Malicious Code Vulnerability in tailwindcss-setfavicon Package

tailwindcss-setfavicon Updated 19 Nov 2025

Summary

18/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-190565: Malicious code in tailwindcss-setfavicon (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The tailwindcss-setfavicon package is an npm module designed to facilitate the setting of favicons in web applications built with Tailwind CSS. It is commonly used by developers to enhance the user experience by providing a custom favicon for their applications. However, this package has been compromised, leading to significant security concerns.

Vulnerability Detail

The vulnerability stems from the presence of malicious code embedded within the tailwindcss-setfavicon package. This code can fully compromise any computer that has the package installed or running, allowing unauthorized access to sensitive information such as secrets and keys. The malicious code is sourced from a known malware repository, indicating a severe risk to users who have installed this package.

How To Fix

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

npm uninstall tailwindcss-setfavicon

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 workaround, if you need to maintain favicon functionality, consider using alternative packages that are known to be secure or implement a manual method for setting favicons without relying on third-party packages.

Conclusion

The tailwindcss-setfavicon package has been identified as containing malicious code that poses a significant security risk. Users are advised to uninstall the package immediately and take necessary precautions to secure their sensitive information. Monitoring tools like Vulert can help in identifying such vulnerabilities in the future.

See every vulnerability recorded for tailwindcss-setfavicon →

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FAQ

It is an npm module used to set favicons in web applications built with Tailwind CSS.

The malicious code can compromise your system, allowing unauthorized access to sensitive information and potentially leading to further attacks.

You should immediately uninstall the package and rotate any sensitive information that may have been exposed.

No, there is currently no patched version of the tailwindcss-setfavicon package available.

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

How To Fix

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

npm uninstall tailwindcss-setfavicon

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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