CVE-2026-59213: Openwebui Open Webui

Medium severity, CVSS 5.0. 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. From 0.6.27 before 0.10.0, get_all_models handlers in routers/openai.py and routers/ollama.py passed a lambda to aiocache key instead of key_builder, causing permission-filtered per-user model lists to share a static cache entry and exposing one user’s model list to another caller during the TTL window. This issue is fixed in version 0.10.0.

Affected products

• Openwebui Open Webui: from 0.6.27, before 0.10.0 (fixed in 0.10.0)

Published 2026-07-09. Last modified 2026-07-10.