CVE-2026-34222: Openwebui Open Webui

High severity, CVSS 7.7. EPSS: 0.5% chance of exploitation in the next 30 days.

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to version 0.8.11, there is a broken access control vulnerability in tool values. This issue has been patched in version 0.8.11.

Affected products

• Openwebui Open Webui: before 0.8.11 (fixed in 0.8.11)

Published 2026-04-01. Last modified 2026-06-17.