🛡️ CVE-2026-26192
🟠 CVSS 7.3 — High ⚠️ Exploit Public CWE-79 NVD
7.3
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

Details

Severity HIGH
CVSS Score 7.3
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
CWE CWE-79
Public Exploit ⚠️ Yes
Source NVD
Published 2026-02-19
Updated 2026-06-02
Modified 2026-02-20
Fix URL N/A

Affected Packages

Software From version Fixed in
open-webui 0.7.0

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