CVE-2026-109296: Authorization Bypass Through User-Controlled Key

Open WebUI before 0.11.4 contains a missing authorization vulnerability that allows authenticated users to reach disabled model provider backends by supplying an explicit backend index. Attackers can pass the index as a path segment or query parameter on Ollama and OpenAI-compatible listing route...

PT-2026-110713

Name of the Vulnerable Software and Affected Versions Open WebUI versions prior to 0.11.4 Description Authenticated users can access disabled model provider backends by providing an explicit backend index. This occurs on Ollama and OpenAI-compatible listing routes, where the index can be passed a...