CVE-2026-45314

MEDIUM

Open WebUI: XSS via SVG in /api/v1/channels/webhooks/{webhook_id}/profile/image

Title source: cna
STIX 2.1

Description

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.3, the channel webhook create/update flow accepts arbitrary profile_image_url values, including data:image/svg+xml;base64,... payloads. The profile image endpoint then decodes and serves this SVG as image/svg+xml without sanitization, allowing attacker-controlled script handlers (for example onload) to execute when the profile-image URL is opened in the browser. This vulnerability is fixed in 0.9.3.

References (1)

Core 1
Core References

Scores

CVSS v3 6.1
EPSS 0.0021
EPSS Percentile 11.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-87
Status published
Products (3)
open-webui/open-webui < 0.9.3
openwebui/open_webui < 0.9.3
pypi/open-webui 0 - 0.9.3PyPI
Published May 15, 2026
Tracked Since May 16, 2026