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CVE-2026-109290

8.4 high SSVC exploitation: poc Published
NVD · CVE.org

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.

Fix

Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.

Change history 4

  1. StatusAwaiting Analysis → PublishedNVD modified 2026-10-23 21:57
  2. CwesCWE-79 → CWE-79, CWE-1021NVD modified 2026-10-23 22:16
  3. StatusReceived → Awaiting AnalysisNVD modified 2026-10-15 15:55
  4. First seenCVSS 8.4NVD modified 2026-10-13 19:18

Affected (CPE criteria) 0

NVD has not attached CPE configurations yet.

References 3