CVE-2026-44568CWE-79

Open WebUI: Stored XSS in Pending User Overlay via Incorrect DOMPurify Application Order

Medium · published May 15, 2026

CVSS v3.1
4.8
EPSS
0%
Percentile
15.4
In the wild
Unconfirmed
What it is

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, 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.

The record
Technical detail
CVSS v3.1
4.8 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00250 · 15.4th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-05-15T19:24Z
EPSS history
Timeline
  • 15 MAY 19:24Z
    Open WebUI: Stored XSS in Pending User Overlay via Incorrect DOMPurify Application Order
    cvelistv5