{"apiVersion":"1.0","identifier":"CVE-2026-71424","description":"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.","publishedAt":"2026-08-17T22:17:26","lastModifiedAt":"2026-08-18T18:19:32","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-71424","cvssScore":9.6,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","epssProbability":0.00291,"riskScore":0.99,"affectedProduct":"Onyx","affectedVersions":"<3.1.10,<3.2.14,<4.0.0","vulnerabilityType":"Web app","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-71424","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-71424","en":"https://www.redsauce.net/en/cves/CVE-2026-71424","fr":"https://www.redsauce.net/fr/cves/CVE-2026-71424","pt":"https://www.redsauce.net/pt/cves/CVE-2026-71424","de":"https://www.redsauce.net/de/cves/CVE-2026-71424","sk":"https://www.redsauce.net/sk/cves/CVE-2026-71424","el":"https://www.redsauce.net/el/cves/CVE-2026-71424"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-71424"}}