CVE-2026-109290
Open WebUI from 0.11.1 before 0.11.4 contains a stored cross-site scripting vulnerability in…
- Risk score
- 55/100
- CVSS
- 8.7 v3.1
- Exploit chance (30 days)
- 0.2%
- Published
- 12 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- 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 sessi…
- Affected
- See advisory
- Fix
- Upgrade the product to 0.11.4 or later.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 8.7 high
References
Original 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.
Last activity 12 Oct 2026. Patch Forecast updates every hour.