{"id":"CVE-2026-70480","state":"PUBLISHED","title":"Open WebUI: Client-side SSRF via unrestricted external resource loading in Vega/Vega-Lite chart rendering","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.","publishedAt":"2026-08-04T19:43:15.645Z","updatedAt":"2026-08-05T14:18:27.453Z","severity":{"score":4.1,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:N/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["open-webui open-webui"],"affected":[{"vendor":"open-webui","product":"open-webui","versions":[{"version":">= 0.6.34, < 0.11.0","status":"affected"}]}],"references":["https://github.com/open-webui/open-webui/security/advisories/GHSA-rffm-9q57-q649","https://github.com/open-webui/open-webui/pull/26806","https://github.com/open-webui/open-webui/commit/5278eb906ebecefc6538a19bc86df09d997e43e6","https://github.com/open-webui/open-webui/releases/tag/v0.11.0"],"weaknesses":["CWE-918"],"ingestedAt":"2026-10-29T20:12:49.727Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/70xxx/CVE-2026-70480.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-70480","state":"PUBLISHED","datePublished":"2026-08-04T19:43:15.645Z","dateUpdated":"2026-08-05T14:18:27.453Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-08-04T15:24:41.339Z"},"containers":{"cna":{"title":"Open WebUI: Client-side SSRF via unrestricted external resource loading in Vega/Vega-Lite chart rendering","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"open-webui","product":"open-webui","versions":[{"version":">= 0.6.34, < 0.11.0","status":"affected"}]}],"references":[{"url":"https://github.com/open-webui/open-webui/security/advisories/GHSA-rffm-9q57-q649","name":"https://github.com/open-webui/open-webui/security/advisories/GHSA-rffm-9q57-q649","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/open-webui/open-webui/pull/26806","name":"https://github.com/open-webui/open-webui/pull/26806","tags":["x_refsource_MISC"]},{"url":"https://github.com/open-webui/open-webui/commit/5278eb906ebecefc6538a19bc86df09d997e43e6","name":"https://github.com/open-webui/open-webui/commit/5278eb906ebecefc6538a19bc86df09d997e43e6","tags":["x_refsource_MISC"]},{"url":"https://github.com/open-webui/open-webui/releases/tag/v0.11.0","name":"https://github.com/open-webui/open-webui/releases/tag/v0.11.0","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":4.1,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:N/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-918","lang":"en","description":"CWE-918: Server-Side Request Forgery (SSRF)","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-08-04T19:43:15.645Z"},"source":{"advisory":"GHSA-rffm-9q57-q649","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/open-webui/open-webui/security/advisories/GHSA-rffm-9q57-q649","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-05T14:18:17.750527Z","id":"CVE-2026-70480","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-05T14:18:27.453Z"}}]}}}