AUGUST 16, 2026
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Case File

CVE-2026-70480

MEDIUM · CVSS 4.1 EPSS 0.19% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-08-04 · Last synced 2026-08-16

CyberRota Analysis

AI-Generated

Open WebUI versions 0.6.34 to 0.11.0 are vulnerable due to improper handling of vega and vega-lite fenced code blocks, allowing an attacker to craft malicious content that can trigger unauthorized outbound GET requests from a user's browser. This vulnerability can lead to information disclosure from same-origin or CORS-permissive targets, potentially exposing sensitive data. Organizations using affected versions should prioritize upgrading to version 0.11.0 to mitigate this risk.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-70480
Severity
MEDIUM
CVSS
4.1
EPSS
0.19%

Original NVD 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.