Open WebUI: XSS via SVG in /api/v1/channels/webhooks/{webhook_id}/profile/image_CVE-2026-45314

7.4 / 10

HIGH

CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

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.

Basic Information

ID CVE-2026-45314

Source GitHub_M

Published May 15, 2026 at 21:31

Affected Product

Vendor open-webui

Product open-webui

Version < 0.9.3

Affected Versions open-webui open-webui < 0.9.3

CWE Classification

CWE-87

References

github.com /open-webui/open-webui/security/advisories/GHSA-3856-3vxq-m6fc

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    "published": "2026-05-15T21:31:24.526Z",
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