CVE-2026-26192
High
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.
SeverityHigh
CVSS7.3
Exploit probability—
ProductOpenwebui Open Webui
PublishedFeb 19, 2026
First seenFeb 19, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- openwebui open_webui0.7.0 or later
- open-webui0.7.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| openwebui open_webui | v < 0.7.0 | 0.7.0 |
| open-webuiPyPI | v < 0.7.0 | 0.7.0 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.