CVE-2025-46571 Information

Description

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to version 0.6.6 low privileged users can upload HTML files which contain JavaScript code via the /api/v1/files/ backend endpoint. This endpoint returns a file id which can be used to open the file in the browser and trigger the JavaScript code in the user’s browser. Under the default settings files uploaded by low-privileged users can only be viewed by admins or themselves limiting the impact of this vulnerability. A link to such a file can be sent to an admin and if clicked will give the low-privileged user complete control over the admin’s account ultimately enabling RCE via functions. Version 0.6.6 contains a fix for the issue.

Reference

https://github.com/open-webui/open-webui/blob/main/backend/open_webui/routers/files.py#L434-L438 https://github.com/open-webui/open-webui/commit/ef2aeb7c0eb976bac759e59ac359c94a5b8dc7e0 https://github.com/open-webui/open-webui/security/advisories/GHSA-8gh5-qqh8-hq3x