CVE-2026-109291

HighCVSS 7.3/10Last modified Oct 18, 2026

Description

Open WebUI from 0.6.33 before 0.11.4 contains a cross-site scripting vulnerability that allows authenticated users to execute script in victims' sessions by storing javascript: URLs in citation embed_url fields. Attackers can share a crafted chat whose citation, when clicked, is passed to window.open, letting them steal localStorage.token and act as the victim.

Metrics

CVSS 3.1 7.3/10CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N

Weakness enumeration

CWE-79

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

Vendor	Product	Versions
open-webui	open-webui	>= 0.6.33, < 0.11.4

References

Timeline

Published: Oct 12, 2026
Last modified: Oct 18, 2026
NVD status: Awaiting Analysis

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