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.
{
"cna_assigner": "GitHub_M",
"cwe_ids": [
"CWE-918"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/70xxx/CVE-2026-70480.json"
}{
"extracted_events": [
{
"cpe": "cpe:2.3:a:openwebui:open_webui:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0.6.34"
},
{
"fixed": "0.11.0"
}
],
"source": "CPE_RANGE"
},
{
"range": [
{
"fixed": "5278eb906ebecefc6538a19bc86df09d997e43e6"
}
],
"source": "REFERENCES_COMMIT"
},
{
"original_tag": "v0.11.0",
"range": [
{
"fixed": "f9590b8017199e56d5e953657e6498e3cef1d246"
}
],
"source": "REFERENCES_TAG"
}
]
}