medium4.1
CVE-2026-70480
Open WebUI: Client-side SSRF via unrestricted external resource loading in Vega/Vega-Lite chart rendering
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | open-webui | >= 0.6.34, < 0.11.0 | 0.11.0 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Openwebui | Open Webui | from 0.6.34 before 0.11.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-rffm-9q57-q649
- https://github.com/open-webui/open-webui/security/advisories/GHSA-rffm-9q57-q649
- https://github.com/open-webui/open-webui/pull/26806
- https://github.com/open-webui/open-webui/commit/5278eb906ebecefc6538a19bc86df09d997e43e6
- https://github.com/open-webui/open-webui/releases/tag/v0.11.0