PYSEC-2026-1731 Open WebUI allows Remote Code Execution via Arbitrary File Upload to /audio/api/v1/transcriptions

OpenWebUI version 0.3.0 contains a vulnerability in the audio API endpoint /audio/api/v1/transcriptions that allows for arbitrary file upload. The application performs insufficient validation on the file.contenttype and allows user-controlled filenames, leading to a path traversal vulnerability...