CVE-2026-45349 – Open WebUI: Broken Access Control for Completions API

CVE ID :CVE-2026-45349

Published : May 15, 2026, 7:20 p.m. | 47 minutes ago

Description :Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, a user just needs to use the API endpoint: /api/chat/completions with their own API key (generated in OWUI) and the Chat ID of another user to continue the conversation of the other user. This vulnerability is fixed in 0.9.0.

Severity: 0.0 | NA

Visit the link for more details, such as CVSS details, affected products, timeline, and more…