Open WebUI from 0.11.1 before 0.11.4 contains a stored cross-site scripting vulnerability in DocxPreview.svelte that allows authenticated users to execute script by uploading crafted DOCX attachments. Attackers can embed an OOXML altChunk HTML part or script-scheme hyperlink to steal a previewing administrator's session token from local storage and take over the instance.
Metrics
Affected Vendors & Products
Advisories
No advisories yet.
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Mon, 12 Oct 2026 19:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Open-webui
Open-webui open-webui |
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| Vendors & Products |
Open-webui
Open-webui open-webui |
Mon, 12 Oct 2026 16:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Open WebUI from 0.11.1 before 0.11.4 contains a stored cross-site scripting vulnerability in DocxPreview.svelte that allows authenticated users to execute script by uploading crafted DOCX attachments. Attackers can embed an OOXML altChunk HTML part or script-scheme hyperlink to steal a previewing administrator's session token from local storage and take over the instance. | |
| Title | Open WebUI 0.11.1 before 0.11.4 Stored XSS via DOCX Preview | |
| First Time appeared |
Openwebui
Openwebui open Webui |
|
| Weaknesses | CWE-79 | |
| CPEs | cpe:2.3:a:openwebui:open_webui:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Openwebui
Openwebui open Webui |
|
| References |
| |
| Metrics |
cvssV3_1
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Projects
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Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-10-12T16:04:51.655Z
Reserved: 2026-10-12T14:12:52.833Z
Link: CVE-2026-109290
No data.
Status : Received
Published: 2026-10-12T17:17:22.210
Modified: 2026-10-12T17:17:22.210
Link: CVE-2026-109290
No data.
OpenCVE Enrichment
Updated: 2026-10-12T19:45:06Z
Weaknesses