CVE-2026-41269 Flowise: File Upload Validation Bypass in createAttachment

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, the Chatflow configuration file upload settings can be modified to allow the application/javascript MIME type. This lets an attacker upload .js files even though the frontend doesn’t normally...

Arbitrary File Upload

Overview flowise-components is a Flowiseai Components Affected versions of this package are vulnerable to Arbitrary File Upload in the createAttachment in Chatflow. An attacker can upload and persistently store malicious JavaScript files on the server by bypassing MIME type validation, which may...