CVE-2026-109290

7.3 HIGHpublic exploit available

Published 2026-10-12 · Updated 2026-10-15

AI analysis for this CVE has not been generated yet. Raw NVD data is shown below.

NVD 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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N

Weaknesses

CWE-79

Public exploit & PoC references

https://github.com/open-webui/open-webui/security/advisories/GHSA-f9xp-mfmq-x6cg
https://github.com/open-webui/open-webui/security/advisories/GHSA-f9xp-mfmq-x6cg

All references

https://github.com/open-webui/open-webui/security/advisories/GHSA-f9xp-mfmq-x6cg
https://www.vulncheck.com/advisories/open-webui-0.11.1-before-0.11.4-stored-xss-via-docx-preview
https://github.com/open-webui/open-webui/security/advisories/GHSA-f9xp-mfmq-x6cg

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.

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