CVE-2026-45365

Description

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.8.11, an internal-only bypass_filter 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 ?bypass_filter=true and bypass model access control checks to invoke admin-restricted models. This vulnerability is fixed in 0.8.11.

PUBLISHED Reserved 2026-05-12 | Published 2026-05-15 | Updated 2026-05-19 | Assigner GitHub_M

Problem types

CWE-285: Improper Authorization

Product status

References

github.com/...-webui/security/advisories/GHSA-v6qf-75pr-p96m exploit

github.com/...-webui/security/advisories/GHSA-v6qf-75pr-p96m

cve.org (CVE-2026-45365)

nvd.nist.gov (CVE-2026-45365)

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