Open WebUI 0.11.1 before 0.11.4 Stored XSS via DOCX Preview
Exact source revision recorded 23 Oct 2026 22:48:20 UTC. It does not establish the source's current position. Latest evidence.
cve-program · CVE-2026-109290
PublishedOpen 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.
- Source published
- 12 Oct 2026 16:04:51 UTC
- Source modified
- 23 Oct 2026 21:57:53 UTC
- Observed here
- 23 Oct 2026 22:48:20 UTC
- Source terms
- CVE Program Terms of Use
Original source record · Cite this exact observation · Complete original publisher JSON
This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: cve-program · CVE Program Terms of Use. Source text is retained; field grouping and change labels are provided by ChangeIntel.
CVSS 4.0 · 8.4 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
CVSS 3.1 · 8.7 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N