CVE-2026-59217: Openwebui Open Webui

Medium severity, CVSS 4.3. EPSS: 0.4% chance of exploitation in the next 30 days.

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. Prior to 0.10.0, the file upload path accepted metadata.knowledge_id and auto-linked uploaded files to a target knowledge base without applying the write-access check used by /api/v1/knowledge//file/add, allowing read-only knowledge-base users to add arbitrary files. This issue is fixed in version 0.10.0.

Affected products

• Openwebui Open Webui: before 0.10.0 (fixed in 0.10.0)

Published 2026-07-09. Last modified 2026-07-14.