CVE-2026-45397: Openwebui Open Webui

Medium severity, CVSS 5.3. EPSS: 0.8% chance of exploitation in the next 30 days.

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.5, GET /api/v1/retrieval/ returns live RAG pipeline configuration to any unauthenticated HTTP client. No Authorization header, cookie, or API key is required. Every adjacent endpoint on the same router (/embedding, /config) is correctly guarded by get_admin_user making this a targeted omission. This vulnerability is fixed in 0.9.5.

Affected products

• Openwebui Open Webui: before 0.9.5 (fixed in 0.9.5)

Published 2026-05-15. Last modified 2026-06-17.