CVE-2026-45400 HIGH

CVE-2026-45400: Open WebUI: Server-Side Request Forgery (SSRF) bypass in `validate_url`

Vendor Open-Webui
Product open-webui
Weakness CWE-918 · SSRF
Published May 15, 2026
Last update May 15, 2026
View on NVD All CVEs

CVSS base score

8.5/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

What the vulnerability does

01Description

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.5, a parsing difference between the urlparse and requests libraries led to an SSRF bypass vulnerability. This vulnerability is fixed in 0.9.5.

Key dates

02Disclosure timeline

May 15, 2026 CVE published
May 15, 2026 Record updated