Security Advisory

CVE-2026-45338

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-05-15 21:46:32

Last updated 2026-05-15 22:21:22

Assigner GitHub_M

CVSS score 7.7

State PUBLISHED

Description

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, a Server-Side Request Forgery (SSRF) vulnerability exists in _process_picture_url() in backend/open_webui/utils/oauth.py (line ~1338). The function fetches arbitrary URLs from OAuth picture claims without applying validate_url(), allowing an attacker to force the server to make HTTP requests to internal resources and exfiltrate the full response. This vulnerability is fixed in 0.9.0.

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