CVE-2026-45365
Medium
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.
SeverityMedium
CVSS5.4
Exploit probability—
ProductOpenwebui Open Webui
PublishedMay 15, 2026
First seenMay 15, 2026
Weakness typeCWE-285CWE-285
How to fix
Update
- openwebui open_webui0.8.11 or later
- open-webui0.8.11 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| openwebui open_webui | v < 0.8.11 | 0.8.11 |
| open-webuiPyPI | v < 0.8.11 | 0.8.11 |
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