CVE-2026-54008

Name of the Vulnerable Software and Affected Versions Open WebUI versions prior to 0.9.6

Description An issue exists where the process picture url() function in backend/open webui/utils/oauth.py performs URL validation only on the initial URL. Subsequently, it uses aiohttp.ClientSession.get() without setting allow redirects=False or utilizing the AIOHTTP CLIENT ALLOW REDIRECTS environment constant. Because the default behavior of aiohttp allows up to 10 redirects, an attacker with a valid OAuth Identity Provider identity can provide a public URL that redirects to an internal address. This allows the attacker to read the internal response body through their own profile image url field, leading to Server-Side Request Forgery (SSRF), a condition where a server is tricked into making unintended requests to internal or external resources.

Recommendations Update to version 0.9.6. As a temporary workaround, disable OAuth until the update is applied.