{"id":"CVE-2026-70480","summary":"Open WebUI: Client-side SSRF via unrestricted external resource loading in Vega/Vega-Lite chart rendering","details":"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.","aliases":["GHSA-rffm-9q57-q649","PYSEC-2026-3651"],"modified":"2026-08-12T03:51:16.634818016Z","published":"2026-08-04T19:43:15.645Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/70xxx/CVE-2026-70480.json","cna_assigner":"GitHub_M","cwe_ids":["CWE-918"]},"references":[{"type":"WEB","url":"https://github.com/open-webui/open-webui/releases/tag/v0.11.0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/70xxx/CVE-2026-70480.json"},{"type":"ADVISORY","url":"https://github.com/open-webui/open-webui/security/advisories/GHSA-rffm-9q57-q649"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-70480"},{"type":"FIX","url":"https://github.com/open-webui/open-webui/commit/5278eb906ebecefc6538a19bc86df09d997e43e6"},{"type":"FIX","url":"https://github.com/open-webui/open-webui/pull/26806"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/open-webui/open-webui","events":[{"introduced":"9ae06a3cac140673cb93895bab37846095e71059"},{"fixed":"5278eb906ebecefc6538a19bc86df09d997e43e6"},{"fixed":"f9590b8017199e56d5e953657e6498e3cef1d246"}],"database_specific":{"extracted_events":[{"introduced":"0.6.34"},{"fixed":"0.11.0"}],"source":["AFFECTED_FIELD","REFERENCES"]}}],"versions":["v0.10.2","v0.10.1","v0.10.0","v0.9.5","v0.9.4","v0.9.3","v0.9.2","v0.9.1","v0.9.0","v0.8.12","v0.8.11","v0.8.10","v0.8.9","v0.8.8","v0.8.7","v0.8.6","v0.8.5","v0.8.4","v0.8.3","v0.8.2","v0.8.1","v0.8.0","v0.7.2","v0.7.1","v0.7.0","v0.6.43","v0.6.42","v0.6.41","v0.6.40","v0.6.39","v0.6.38","v0.6.37","v0.6.36","v0.6.34","v0.6.35"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-70480.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:N/A:N"}]}