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.

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Produits concernés

• open-webui
• Openwebui open webui

Scores CVSS

Faiblesses (CWE)

• CWE-918

Références

• https://github.com/open-webui/open-webui/commit/5278eb906ebecefc6538a19bc86df09d997e43e6 Patch
• https://github.com/open-webui/open-webui/pull/26806 PatchVendor Advisory
• https://github.com/open-webui/open-webui/releases/tag/v0.11.0 Release Notes
• https://github.com/open-webui/open-webui/security/advisories/GHSA-rffm-9q57-q649 ExploitPatchVendor Advisory
• https://github.com/open-webui/open-webui/security/advisories/GHSA-rffm-9q57-q649 ExploitPatchVendor Advisory

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories