{"id":"CVE-2026-68578","aliases":["EUVD-2026-51988","GHSA-6x73-v3rc-f57c","GHSA-hq22-48ph-vqch"],"status":"published","title":"ArcadeDB before 26.7.3 Authentication Bypass via MCP Transport","description":"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.","severity":{"version":"4.0","score":7.7,"vector":"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","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00363,"percentile":0.30536,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-306"],"published":"2026-08-02T12:15:25Z","modified":"2026-10-28T02:30:56Z","products":[{"vendor":"arcadedata","product":"arcadedb"}],"references":[{"url":"https://github.com/ArcadeData/arcadedb/security/advisories/GHSA-6x73-v3rc-f57c","tags":["vendor-advisory","exploit","advisory"]},{"url":"https://www.vulncheck.com/advisories/arcadedb-authentication-bypass-via-mcp-transport","tags":["third-party-advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-68578","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-hq22-48ph-vqch"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68578.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-68578","title":"ArcadeDB before 26.7.3 Authentication Bypass via MCP Transport","description":"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.","status":"published","published":"2026-08-02T12:15:25.82Z","modified":"2026-08-03T15:44:10.206Z","cvss":[{"version":"4.0","score":7.7,"vector":"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","level":"high","assessor":"cna"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-306"],"updated_at":"2026-11-02T13:46:10.323375Z"}],"euvd":[{"id":"EUVD-2026-51988","description":"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.","status":"published","published":"2026-08-02T12:15:25Z","modified":"2026-08-03T15:44:10Z","cvss":[{"version":"4.0","score":7.7,"vector":"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","level":"high"}],"updated_at":"2026-11-02T18:02:24.366648Z"}],"ghsa":[{"id":"GHSA-hq22-48ph-vqch","title":"ArcadeDB versions before 26.7.3 fail to bind the authenticated principal in the MCP HTTP...","description":"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.","status":"published","published":"2026-08-02T15:30:21Z","modified":"2026-08-02T15:30:25Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"},{"version":"4.0","score":7.7,"vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"}],"cwes":["CWE-306"],"updated_at":"2026-11-02T15:10:01.548476Z"}],"nvd":[{"id":"CVE-2026-68578","description":"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.","status":"published","published":"2026-08-02T13:16:53.657Z","modified":"2026-10-23T22:10:00.16Z","cvss":[{"version":"4.0","score":7.7,"vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-306"],"updated_at":"2026-11-02T14:12:34.290716Z"}],"osv":[{"id":"CVE-2026-68578","title":"ArcadeDB before 26.7.3 Authentication Bypass via MCP Transport","description":"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.","status":"published","published":"2026-08-02T12:15:25.82Z","modified":"2026-10-28T02:30:56.248331511Z","cvss":[{"version":"4.0","score":7.7,"vector":"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","level":"high"}],"cwes":["CWE-306"],"updated_at":"2026-11-02T15:45:14.808935Z"}]}}