CVE-2026-70480
Medium
Description
Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.6.34 until 0.11.0, Open WebUI renders vega and vega-lite fenced code blocks in chat content by building a Vega view in the viewer browser without a restricted resource loader. Any user who can place such a block where another user will see it can make that user browser issue attacker-chosen outbound GET requests and read responses from same-origin or CORS-permissive targets into the rendered page. This issue is fixed in 0.11.0.
SeverityMedium
CVSS4.1
Exploit probability—
ProductOpenwebui Open Webui
PublishedAug 4, 2026
First seenAug 4, 2026
Weakness typeCWE-918Server-side request forgery (SSRF)
How to fix
Update
- openwebui open_webui0.11.0 or later
- open-webui0.11.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| openwebui open_webui | 0.6.34 ≤ v < 0.11.0 | 0.11.0 |
| open-webuiPyPI | 0.6.34 ≤ v < 0.11.0 | 0.11.0 |
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