Malicious Code Detected in flatchr Package - Security Alert
Summary
MAL-2025-20689: Malicious code in flatchr (npm). Affected versions are not published. No fix is published. How to fix ↓
Check if this vulnerability affects your application
Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.
No signup required · Results in about 60 seconds
Background
The flatchr package is an npm library designed for facilitating chat functionalities in web applications. It provides developers with tools to integrate chat features seamlessly. However, recent findings have revealed that this package contains malicious code, posing significant security risks to applications that utilize it.
Vulnerability Detail
The vulnerability in the flatchr package stems from the inclusion of malicious code that can compromise the security of applications using this library. This code may lead to unauthorized access, data breaches, or other malicious activities. The issue was introduced in version 0 and affects all subsequent versions, making it critical for users to take immediate action.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall flatchrIf 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, consider removing the flatchr package from your project until a secure version is released. You can do this by executing: npm uninstall flatchr.
Conclusion
The discovery of malicious code in the flatchr package highlights the importance of maintaining secure dependencies in software development. Users are urged to take immediate action by updating or removing the package to safeguard their applications.
See every vulnerability recorded for flatchr →
FAQ
Flatchr is an npm package designed to help developers integrate chat functionalities into their web applications.
The malicious code can lead to unauthorized access and potential data breaches, posing serious security risks.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time. Check your application using the Vulert playground at Vulert Scanner without any signup.
Currently, there is no patched version available. Users should monitor the package repository for updates.
As a temporary measure, consider uninstalling the flatchr package until a secure version is released.
