Medium severity4.1NVD Advisory· Published Aug 4, 2026· Updated Sep 18, 2026
CVE-2026-70480
CVE-2026-70480
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
open-webuiPyPI | >= 0.6.34, < 0.11.0 | 0.11.0 |
Affected products
2cpe:2.3:a:openwebui:open_webui:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:openwebui:open_webui:*:*:*:*:*:*:*:*range: >=0.6.34,<0.11.0
- (no CPE)range: 0.6.34 - 0.11.0
Patches
Vulnerability mechanics
References
5- github.com/open-webui/open-webui/commit/5278eb906ebecefc6538a19bc86df09d997e43e6nvdPatchWEB
- github.com/open-webui/open-webui/pull/26806nvdPatchVendor AdvisoryWEB
- github.com/open-webui/open-webui/security/advisories/GHSA-rffm-9q57-q649nvdExploitPatchVendor AdvisoryWEB
- github.com/advisories/GHSA-rffm-9q57-q649ghsaADVISORY
- github.com/open-webui/open-webui/releases/tag/v0.11.0nvdRelease NotesWEB
News mentions
1- Open WebUI: 17 Vulnerabilities Disclosed Together, Patched in 0.11.0Vypr Intelligence · Aug 4, 2026