CVE-2026-26192

🔴 HIGH

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 doc...

Published
Feb 19, 2026
Last Modified
Feb 20, 2026
Views
1
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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.

Affected Products (1)

openwebui - open_webui

Version: *

CVSS Scores

CVSS 3.1 7.3
7.3
HIGH
CVSS 2.0 7.3

Additional Information

Source
security-advisories@github.com
State
Analyzed

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