CVE-2026-45314CWE-87

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

High · published May 15, 2026

CVSS v4.0
7.4
EPSS
0%
Percentile
14.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
7.4 · HIGH
Vector
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
EPSS
0.00241 · 14.4th percentile
Weakness
CWE-87 · Improper Neutralization of Alternate XSS Syntax
Published
2026-05-15T21:31Z
EPSS history
Timeline
  • 15 MAY 21:31Z
    Open WebUI: XSS via SVG in /api/v1/channels/webhooks/{webhook_id}/profile/image
    cvelistv5