CVE-2026-71424

{"id": "CVE-2026-71424", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-71424", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-08-18T17:28:35.060950Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 9.6, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.8, "exploitabilityScore": 3.1}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "onyx-dot-app", "product": "onyx", "versions": [{"status": "affected", "version": "< 3.1.10"}, {"status": "affected", "version": ">= 3.2.0, < 3.2.14"}, {"status": "affected", "version": ">= 3.3.0-beta.0, < 4.0.0"}]}]}], "published": "2026-08-17T22:17:26.527", "references": [{"url": "https://github.com/onyx-dot-app/onyx/commit/3f3d79d1a7722fdc84a1c61c8aa830d890017e9e", "source": "security-advisories@github.com"}, {"url": "https://github.com/onyx-dot-app/onyx/commit/4001cedd0a8968723bfe95dd188914ed56777910", "source": "security-advisories@github.com"}, {"url": "https://github.com/onyx-dot-app/onyx/commit/b103937888fd5008067c2bb6eb6e5424576394f2", "source": "security-advisories@github.com"}, {"url": "https://github.com/onyx-dot-app/onyx/pull/11238", "source": "security-advisories@github.com"}, {"url": "https://github.com/onyx-dot-app/onyx/pull/11242", "source": "security-advisories@github.com"}, {"url": "https://github.com/onyx-dot-app/onyx/pull/11243", "source": "security-advisories@github.com"}, {"url": "https://github.com/onyx-dot-app/onyx/releases/tag/v4.0.0", "source": "security-advisories@github.com"}, {"url": "https://github.com/onyx-dot-app/onyx/security/advisories/GHSA-q62f-rv3h-f822", "source": "security-advisories@github.com"}], "vulnStatus": "Received", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-200"}, {"lang": "en", "value": "CWE-863"}]}], "descriptions": [{"lang": "en", "value": "Onyx is an open-source AI platform. Prior to 3.1.10, 3.2.14, and 4.0.0, Onyx's GET /api/mcp/servers and GET /api/mcp/servers/persona/{persona_id} endpoints expose another user's OAuth Authorization header because OnyxTokenStorage.set_tokens and OnyxTokenStorage.set_client_info in backend/onyx/server/features/mcp/api.py copy per-user tokens into a shared admin MCPConnectionConfig row and _db_mcp_server_to_api_mcp_server returns that row through auth_template.headers to any BASIC_ACCESS user. This issue is fixed in versions 3.1.10, 3.2.14, and 4.0.0."}], "lastModified": "2026-08-18T18:19:32.247", "sourceIdentifier": "security-advisories@github.com"}