Open WebUI: Authenticated users can bypass model access control via exposed query parameter [AI-ASSISTED]

SummaryAn internal-only bypassfilter parameter is exposed on the /openai/chat/completions and /ollama/api/chat HTTP endpoints via FastAPI query string binding, allowing any authenticated user to append ?bypassfilter=true and bypass model access control checks to invoke admin-restricted models...

The vulnerability of the Open WebUI web interface, related to deficiencies in the authentication process, allows attackers to circumvent existing security restrictions.

The vulnerability of the Open WebUI web interface, based on artificial intelligence, is related to deficiencies in the authentication process when processing the bypassfilter parameter for endpoints like /openai/chat/completions and /ollama/api/chat. Exploiting this vulnerability allows a malicio...

Open WebUI 授权问题漏洞

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted WebUI under the open source Open WebUI project. Versions of Open WebUI prior to 0.8.11 had an authorization issue vulnerability. This vulnerability stemmed from the internal bypassfilter parameter being exposed through FastA...