Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to version 0.7.0, aanually modifying chat history allows setting the `html` property within document metadata. This causes the frontend to enter a code path that treats document contents as HTML, and render them in an iFrame when the citation is previewed. This allows stored XSS via a weaponized document payload in a chat. The payload also executes when the citation is viewed on a shared chat. Version 0.7.0 fixes the issue.
History

Fri, 20 Feb 2026 01:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Thu, 19 Feb 2026 20:00:00 +0000

Type Values Removed Values Added
Description Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to version 0.7.0, aanually modifying chat history allows setting the `html` property within document metadata. This causes the frontend to enter a code path that treats document contents as HTML, and render them in an iFrame when the citation is previewed. This allows stored XSS via a weaponized document payload in a chat. The payload also executes when the citation is viewed on a shared chat. Version 0.7.0 fixes the issue.
Title Open WebUI vulnerable to Stored XSS via iFrame in citations model
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 7.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-02-19T21:23:23.625Z

Reserved: 2026-02-11T19:56:24.812Z

Link: CVE-2026-26192

cve-icon Vulnrichment

Updated: 2026-02-19T21:16:46.109Z

cve-icon NVD

Status : Received

Published: 2026-02-19T20:25:42.290

Modified: 2026-02-19T20:25:42.290

Link: CVE-2026-26192

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.