CVE WatchAug 5, 2026

CVE-2026-70480

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

CVSS

4.1

Medium

EPSS

0.2%

KEV

—

Exploit Today

0-100

Published: Aug 4, 2026 · Last modified: Aug 5, 2026 · CWE-918

EPSS · 30d

0.2%EPSS · 30 days0.2%

2026-08-052026-08-08

Technical 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.

Official references

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