CVE-2026-45400

HIGH

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

Title source: cna

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.

References (1)

Core 1

Core References

X_Refsource_Confirm x_refsource_confirm

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

Scores

CVSS v3 8.5

EPSS 0.0003

EPSS Percentile 10.0%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation poc

Automatable no

Technical Impact partial

Details

CWE

CWE-918

Status published

Products (3)

open-webui/open-webui < 0.9.5

openwebui/open_webui < 0.9.5

pypi/open-webui 0 - 0.9.5PyPI

Published May 15, 2026

Tracked Since May 16, 2026