{
 "public_id": "AIR-2026-0239",
 "incident_id": "2026-09-mysql-mcp-server-sse-unauth-sql",
 "date_disclosed": "2026-09-11",
 "date_occurred": null,
 "title": "CVE-2026-59971: unauthenticated SQL execution in MySQL MCP Server SSE transport (no DNS-rebinding protection, binds 0.0.0.0)",
 "class": "responsible_disclosure",
 "attack_surface": "mcp_server",
 "initial_vector": "unauthenticated_network_request",
 "agent_capability_abused": [
  "sql_execution_tool",
  "sse_http_transport",
  "file_read",
  "file_write"
 ],
 "target_product": "mysql_mcp_server",
 "target_vendor": "designcomputer",
 "autonomy_level": "assistant",
 "impact_realized": false,
 "impact_type": [
  "unauthorized_database_access",
  "data_exfiltration",
  "remote_code_execution"
 ],
 "blast_radius": "mysql_mcp_server < 0.4.2 run in SSE mode; internet scanning found 25 publicly reachable SSE instances",
 "cve": [
  "CVE-2026-59971"
 ],
 "taxonomy": {
  "owasp_asi": [
   "ASI05",
   "ASI03"
  ],
  "mitre_atlas": [],
  "labels": [
   "missing_authentication",
   "dns_rebinding",
   "sse_transport",
   "mcp_server"
  ]
 },
 "defense_present": null,
 "defense_bypassed": true,
 "fix_shipped": "mysql_mcp_server 0.4.2 (enables TransportSecuritySettings DNS-rebinding protection, recommends 127.0.0.1 bind)",
 "primary_sources": [
  "https://github.com/designcomputer/mysql_mcp_server/security/advisories/GHSA-rqfv-2mw9-78g2",
  "https://cveawg.mitre.org/api/cve/CVE-2026-59971",
  "https://cvebrief.com/archive/2026/09/16/"
 ],
 "verified_quote": "A network attacker can directly reach execute_sql, or can use DNS rebinding to make a victim's browser relay same-origin requests to a locally bound service, and supply a query that reaches cursor.execute(query).",
 "confidence": "high",
 "notes": "CVSS 10.0. GHSA-rqfv-2mw9-78g2 published 2026-09-11; CVE published 2026-09-15 (GitHub CNA). Discovered by Huanchen, SongWu (JHU), BrookeYangRui (JHU). Default stdio transport unaffected. FILE privilege enables LOAD_FILE/INTO OUTFILE read/write and potential RCE. No exploitation documented (25 exposed SSE instances found by scanning). Part of the 2026-09-16 CVE Brief MCP-server cluster.",
 "risk_category": "security_fraud",
 "risk_secondary": [
  "privacy"
 ],
 "risk_subcategory": "Server-Side Request Forgery via LLM",
 "risk_sub_secondary": [
  "Remote Code Execution & Sandbox Escape"
 ],
 "ai_entity": "generative",
 "agency": "ai_as_target",
 "agency_debatable": false,
 "agency_reason": "unauthenticated MCP server flaw; agent tooling is the attacked endpoint",
 "vector_family": "conventional_vulnerability",
 "vector_detail": "unauthenticated_network_request",
 "guardrail_kind": [
  "unknown"
 ],
 "guardrail_outcome": "silent",
 "xrefs": {
  "aiid": [],
  "atlas": [],
  "cve": [
   "CVE-2026-59971"
  ],
  "ghsa": []
 },
 "primary_asi": "ASI05",
 "agent_framework": "mcp_server",
 "model_provider": "unknown",
 "model_name": "",
 "detection_mechanism": "unknown",
 "tool_access": "unknown",
 "financial_loss_band": "unknown",
 "eai_category": "confused_deputy",
 "eai_domain": "access_control_and_permissions",
 "eai_secondary": [
  "privilege_escalation",
  "data_exfiltration_channels"
 ],
 "eai_reason": "subcategory: Server-Side Request Forgery via LLM",
 "asi_curated": [],
 "asi_scope": "in_scope",
 "asi_provenance": "rule",
 "asi_reason": "ASI05 (impact=code_exec); ASI03 (eai_category=confused_deputy)",
 "submitted_by": "EAI Internal"
}