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NVD Vulnerability Details :
CVE-2026-26192
Received
More InfoOfficial Page
Source-security-advisories@github.com
View Known Exploited Vulnerability (KEV) details
Published At-19 Feb, 2026 | 20:25
Updated At-19 Feb, 2026 | 20:25

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.17.3HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
Type: Secondary
Version: 3.1
Base score: 7.3
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
CPE Matches
Weaknesses
CWE IDTypeSource
CWE-79Primarysecurity-advisories@github.com
CWE ID: CWE-79
Type: Primary
Source: security-advisories@github.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://github.com/open-webui/open-webui/blob/6f1486ffd0cb288d0e21f41845361924e0d742b3/src/lib/components/chat/Messages/Citations/CitationModal.svelte#L163-L170security-advisories@github.com
N/A
https://github.com/open-webui/open-webui/security/advisories/GHSA-xc8p-9rr6-97r2security-advisories@github.com
N/A
Hyperlink: https://github.com/open-webui/open-webui/blob/6f1486ffd0cb288d0e21f41845361924e0d742b3/src/lib/components/chat/Messages/Citations/CitationModal.svelte#L163-L170
Source: security-advisories@github.com
Resource: N/A
Hyperlink: https://github.com/open-webui/open-webui/security/advisories/GHSA-xc8p-9rr6-97r2
Source: security-advisories@github.com
Resource: N/A
Change History
0Changes found
Details not found