CVE-2026-70480 | BDVDB-2026-355238 Detail

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.

Impact#

Weaknesses#

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Exploit#

History#

1. Version 12026-08-04Record published in the CVE List.
2. Version 22026-08-05Most recent update recorded in the CVE List.