CVE-2026-109296 — Open WebUI before 0.11.4 Missing Authorization via Backend Index on Model Routes
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 backen…
Published: 2026-10-12 · CVSS: 5.3 · CVSS 4.0
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.
Source: CVE Program · Revision 2bc2f154a9513fd639cf69e09a5cddfaedf57bdc