{
 "id": "AIR-2026-1044",
 "slug": "cve-2026-40576-path-traversal-in-excel-mcp-server",
 "title": "CVE-2026-40576: Path traversal in excel-mcp-server",
 "summary": "A path traversal vulnerability affects excel-mcp-server versions up to 0.1.7 when running in SSE or HTTP transport modes. Unauthenticated network attackers can read and write arbitrary files on the host filesystem via tool handlers.",
 "type": "attack_on_ai",
 "categories": [
  "infra_vuln"
 ],
 "severity": 2,
 "targets": [
  "framework_or_tooling"
 ],
 "products": [
  "excel-mcp-server"
 ],
 "incident_date": "2026-04-21",
 "incident_date_precision": "day",
 "first_reported": "2026-04-21",
 "sources": [
  {
   "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-40576",
   "publisher": "NVD",
   "title": "CVE-2026-40576: excel-mcp-server is a Model Context Protocol server for Excel file manipulation.",
   "published_at": "2026-04-21"
  }
 ],
 "source_count": 1,
 "confidence": 0.95,
 "status": "published",
 "origin": "seed_nvd",
 "tags": [
  "CVE-2026-40576",
  "path_traversal",
  "infra_vuln",
  "mcp_server"
 ],
 "created_at": "2026-10-18T10:04:21.885Z",
 "updated_at": "2026-10-18T10:04:21.885Z"
}