CVE-2026-45314: Open WebUI stored XSS via SVG webhook profile image

# CVE-2026-45314: Open WebUI stored XSS via SVG webhook profile image

https://gcdradar.vercel.app/incidents/cve-2026-45314-open-webui-stored-xss-via-svg-webhook-profile · AIR-2026-0675 · closed 2026-05-14

- Lane: Patch now
- Severity: 2 (Disclosed vulnerability)
- Fix status: Fix status unknown
- First reported: 2026-05-14
- AI role: Attack on AI
- Products: Open WebUI
- CVE ids: CVE-2026-45314
- CVSS: 7.4

## Summary

Open WebUI accepts arbitrary SVG base64 payloads for webhook profile images without proper sanitization, leading to stored cross-site scripting. A security advisory addresses this finding.

## What to do

No action recorded; read the sources below and the vendor's advisory.

## Latest updates

- 2026-05-15: CVE-2026-45314: Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. (https://nvd.nist.gov/vuln/detail/CVE-2026-45314)
- 2026-05-14: CVE-2026-45314: Open WebUI has XSS via SVG in /api/v1/channels/webhooks/{webhook_id}/profile/image (https://github.com/advisories/GHSA-3856-3vxq-m6fc)

## Sources

- 2026-05-14 GitHub Advisory Database: CVE-2026-45314: Open WebUI has XSS via SVG in /api/v1/channels/webhooks/{webhook_id}/profile/image https://github.com/advisories/GHSA-3856-3vxq-m6fc
- 2026-05-15 NVD: CVE-2026-45314: Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. https://nvd.nist.gov/vuln/detail/CVE-2026-45314

Verify against the vendor's advisory before changing production. Data CC BY-SA 4.0, https://gcdradar.vercel.app.