CVE-2026-45400

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

State: Published
Severity: 8.5 High
Published: May 15, 2026
Updated: May 15, 2026
Reserved: May 12, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	8.5 High	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N	GitHub_M

Weaknesses

CWE-918 Server-Side Request Forgery (SSRF)

Affected Products

Product	Versions
open-webuiopen-webui	< 0.9.5Affected

References

https://github.com/open-webui/open-webui/security/advisories/GHSA-8w7q-q5jp-jvgx

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