CVE-2026-44568

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

State: Published
Severity: 4.8 Medium
Published: May 15, 2026
Updated: May 15, 2026
Reserved: May 6, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	4.8 Medium	CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N	GitHub_M

Weaknesses

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Affected Products

Product	Versions
open-webuiopen-webui	< 0.9.0Affected

References

https://github.com/open-webui/open-webui/security/advisories/GHSA-fq3v-xjjx-95rc

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