Malicious Code Detected in font-filter Package - MAL-2025-20747
Summary
MAL-2025-20747: Malicious code in font-filter (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The font-filter package is an npm library designed for filtering and manipulating font files. It is commonly used in web development to ensure that only specific font formats are utilized, enhancing performance and compatibility. However, this package has been found to contain malicious code, posing a significant risk to applications that rely on it.
Vulnerability Detail
The vulnerability in the font-filter package arises from the inclusion of malicious code that can compromise the security of applications using this library. This code can lead to unauthorized access, data breaches, or other harmful actions within the affected systems. The issue was introduced in version 0 and affects all subsequent versions, making it critical for users to address this vulnerability promptly.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall font-filterIf it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.
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Workaround
As a temporary workaround, users can remove the font-filter package from their dependencies until a secure version is released. This can be done by executing the following command: npm uninstall font-filter.
Conclusion
The font-filter package has been identified as containing malicious code, which poses a serious security risk to applications that utilize it. Users are urged to update or remove the package to protect their systems from potential threats. Utilizing tools like Vulert can help monitor for such vulnerabilities effectively.
See every vulnerability recorded for font-filter →
FAQ
The font-filter package is used for filtering and manipulating font files in web development.
The malicious code was introduced in version 0 of the font-filter package and affects all subsequent versions.
Using the compromised package can lead to unauthorized access, data breaches, and other security vulnerabilities in applications.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time. You can check your application using the Vulert playground at Vulert Scanner without any signup.
If an immediate update is not possible, it is recommended to uninstall the package to mitigate risks until a secure version is available.
