Open WebUI Unauthenticated Multipart Boundary Denial of Service (DoS) Vulnerability

A Denial of Service DoS vulnerability exists in open-webui/open-webui version 0.3.21. This vulnerability affects multiple endpoints, including /ollama/models/upload, /audio/api/v1/transcriptions, and /rag/api/v1/doc. The application processes multipart boundaries without authentication, leading t...