CVE-2026-44568 MEDIUM

CVE-2026-44568: Open WebUI: Stored XSS in Pending User Overlay via Incorrect DOMPurify Application Order

Vendor Open-Webui
Product open-webui
Weakness CWE-79 · XSS
Published May 15, 2026
Last update May 15, 2026

CVSS base score

4.8/10
Attack vector Network
Attack complexity Low
Privileges required High
User interaction Required
Confidentiality Low
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

What the vulnerability does

01Description

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, the AccountPending.svelte component renders the admin-configured "Pending User Overlay Content" using marked.parse() inside {@html} with an incorrect DOMPurify application order. An admin can inject arbitrary JavaScript into the Pending User Overlay Content that executes in the browser context of any pending user who views the overlay page. This vulnerability is fixed in 0.9.0.

Key dates

02Disclosure timeline

May 15, 2026 CVE published
May 15, 2026 Record updated

Related vulnerabilities

04Related CVE