Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, the channel router does not call filter_allowed_access_grants on either create or update paths. A non-admin user who can create group channels (or who owns a channel) can submit arbitrary access grants — including public wildcard grants — and those grants are stored verbatim, bypassing the admin's permission framework. This vulnerability is fixed in 0.9.0.

Open WebUI's Channel Access Grants Bypass filter_allowed_access_grants

Уязвимость функции filter_allowed_access_grants() веб-интерфейса на базе искусственного интеллекта Open WebUI, позволяющая нарушителю повысить свои привилегии