CVE-2026-45314 — Open WebUI: XSS via SVG in /api/v1/channels/webhooks/{webhook_id}/profile/image
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 profi…
Published: 2026-05-15 · CVSS: 7.4 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7