{"id":"CVE-2026-68578","summary":"ArcadeDB before 26.7.3 Authentication Bypass via MCP Transport","details":"ArcadeDB versions before 26.7.3 fail to bind the authenticated principal in the MCP HTTP transport, causing all engine permission checks to silently pass as no-ops. Non-root MCP-allowed users can perform arbitrary database writes, DDL, schema mutations, and execute arbitrary JavaScript code via the query tool.","aliases":["GHSA-6x73-v3rc-f57c"],"modified":"2026-09-06T03:46:36.420708271Z","published":"2026-08-02T12:15:25.820Z","database_specific":{"cna_assigner":"VulnCheck","cwe_ids":["CWE-306"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68578.json"},"references":[{"type":"ADVISORY","url":"https://github.com/ArcadeData/arcadedb/security/advisories/GHSA-6x73-v3rc-f57c"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68578.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-68578"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/arcadedb-authentication-bypass-via-mcp-transport"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/arcadedata/arcadedb","events":[{"introduced":"0"},{"fixed":"f2f3d880597d1d2310d61267e08ff5485504b4b5"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"26.7.3"}],"source":["AFFECTED_FIELD","DESCRIPTION"]}}],"versions":["26.7.2","26.7.1","26.6.1","26.5.1","26.4.2","26.3.2","26.3.1","26.2.1","26.1.1","25.12.1","25.11.1","25.10.1","25.9.1","25.8.1","25.7.1","25.6.1","25.4.1","25.3.2","25.3.1","25.2.1","25.1.1","24.11.2","24.11.1","24.10.1","24.6.1","24.5.1","24.4.1","24.2.1","24.1.1","23.12.2","23.12.1","23.11.1","23.10.1","23.9.1","23.7.1","23.6.1","23.5.1","23.4.1","23.3.1","23.2.1","23.1.2","23.1.1","22.12.1","22.11.1","22.10.1","22.9.1","22.8.1","22.6.1","22.2.1","22.1.3","22.1.2","21.12.1","21.11.1","21.10.2","21.10.1","21.9.1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-68578.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"}]}