CVE-2026-45347

MEDIUM

Open WebUI: Blind server side request forgery (SSRF) via the PDF generate function

Title source: cna
STIX 2.1

Description

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.5.11, there is a blind server side request forgery (SSRF) via the PDF generate function. In the PDF export, user inputs are interpreted as HTML and embedded into the PDF. According to tests, scripts and some potentially dangerous tags (iFrame, Object, etc.) are blocked, preventing server-side content from being read through this vulnerability. However, an image tag can be used to force a server-side request (SSRF), as shown in the following below. This vulnerability is fixed in 0.5.11.

References (1)

Core 1
Core References

Scores

CVSS v3 4.3
EPSS 0.0003
EPSS Percentile 8.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/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 < 0.5.11
openwebui/open_webui < 0.5.11
pypi/open-webui 0 - 0.5.11PyPI
Published May 15, 2026
Tracked Since May 16, 2026