CVE-2026-70480

{"id": "CVE-2026-70480", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-70480", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-08-05T14:18:17.750527Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 4.1, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "LOW"}, "impactScore": 1.4, "exploitabilityScore": 2.3}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "open-webui", "product": "open-webui", "versions": [{"status": "affected", "version": ">= 0.6.34, < 0.11.0"}]}]}], "published": "2026-08-04T20:16:54.903", "references": [{"url": "https://github.com/open-webui/open-webui/commit/5278eb906ebecefc6538a19bc86df09d997e43e6", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/open-webui/open-webui/pull/26806", "tags": ["Patch", "Vendor Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/open-webui/open-webui/releases/tag/v0.11.0", "tags": ["Release Notes"], "source": "security-advisories@github.com"}, {"url": "https://github.com/open-webui/open-webui/security/advisories/GHSA-rffm-9q57-q649", "tags": ["Exploit", "Patch", "Vendor Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/open-webui/open-webui/security/advisories/GHSA-rffm-9q57-q649", "tags": ["Exploit", "Patch", "Vendor Advisory"], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-918"}]}], "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."}], "lastModified": "2026-09-18T14:45:55.337", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:openwebui:open_webui:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5E0BB278-2D0B-4E07-8D62-C87653C21557", "versionEndExcluding": "0.11.0", "versionStartIncluding": "0.6.34"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}