Is CVE-2026-109296 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-109296?

CVE-2026-109296 has a CVSS v3 severity of MEDIUM (4.3).

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CVE-2026-109296

Description

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 routes to trigger requests carrying configured API keys, read version strings, and enumerate connections.