CVE-2026-45338

Open WebUI: SSRF via OAuth Profile Picture URL in _process_picture_url (oauth.py)

State: Published
Severity: 7.7 High
Published: May 15, 2026
Updated: May 15, 2026
Reserved: May 11, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	7.7 High	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N	GitHub_M

Weaknesses

CWE-918 Server-Side Request Forgery (SSRF)

Affected Products

Product	Versions
open-webuiopen-webui	< 0.9.0Affected

References

https://github.com/open-webui/open-webui/security/advisories/GHSA-24c9-2m8q-qhmh

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