CVE-2026-44550 Open WebUI: Mass Assignment via Pydantic extra='allow' Allows Creating Folders in Other Users' Accounts

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, FolderForm uses modelconfig = ConfigDictextra='allow', which permits arbitrary fields to pass through Pydantic validation and be included in modeldumpexcludeunset=True. In...

CVE-2026-44550 Open WebUI: Mass Assignment via Pydantic extra='allow' Allows Creating Folders in Other Users' Accounts

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, FolderForm uses modelconfig = ConfigDictextra='allow', which permits arbitrary fields to pass through Pydantic validation and be included in modeldumpexcludeunset=True. In...

PT-2026-41191

Name of the Vulnerable Software and Affected Versions Open WebUI versions prior to 0.9.5 Description An authenticated attacker can perform a mass assignment attack via the 'POST /api/v1/evaluations/feedback' endpoint. This is possible because the FeedbackForm uses a configuration that allows extr...

GHSA-HR43-RJMR-7WMM Open WebUI's Mass Assignment via Pydantic extra='allow' Allows Creating Folders in Other Users' Accounts

Mass Assignment via Pydantic extra='allow' Allows Creating Folders in Other Users' Accounts Affected Component Folder creation endpoint and form model: - backend/openwebui/models/folders.py lines 72-77, FolderForm with extra='allow' - backend/openwebui/models/folders.py lines 95-106,...

Open WebUI's Mass Assignment via Pydantic extra='allow' Allows Creating Folders in Other Users' Accounts

Mass Assignment via Pydantic extra='allow' Allows Creating Folders in Other Users' Accounts Affected Component Folder creation endpoint and form model: - backend/openwebui/models/folders.py lines 72-77, FolderForm with extra='allow' - backend/openwebui/models/folders.py lines 95-106,...

PT-2026-39267

Name of the Vulnerable Software and Affected Versions Open WebUI versions prior to 0.9.0 Description Open WebUI is a self-hosted artificial intelligence platform. A mass assignment issue exists where the FolderForm uses a configuration that permits arbitrary fields to pass through Pydantic...