CVE-2026-44549

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.8.0, Excel file attachments are previewed in an unsafe way. A crafted XLSX file payload can be used to cause the sheetjs function sheettohtml to embed an XSS payload into the generated...

CVE-2026-45299

Open WebUI had a stored XSS vulnerability in the profile_image_url field on the user profile update form prior to version 0.8.0, due to lack of MIME-type validation for data URIs. Two attack paths were demonstrated: (1) data:text/html;base64… opened in a new tab, and (2) data:image/svg+xml;base64...

CVE-2026-45665 Open WebUI: Stored XSS in Banner Component via Improper Sanitization Order

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.8.0, a Stored Cross-Site Scripting XSS vulnerability exists in the Banner component due to an improper sanitization order specifically, DOMPurify is executed before the marked library. Th...