{
 "id": "AIR-2026-1004",
 "slug": "cve-2026-33946-mcp-ruby-sdk-session-hijacking-vulnerability",
 "title": "CVE-2026-33946: MCP Ruby SDK session hijacking vulnerability",
 "summary": "The MCP Ruby SDK contains a session hijacking vulnerability in its HTTP transport implementation allowing stream interception. Version 0.9.2 was released to patch the issue.",
 "type": "attack_on_ai",
 "categories": [
  "infra_vuln"
 ],
 "severity": 2,
 "targets": [
  "framework_or_tooling"
 ],
 "products": [
  "MCP Ruby SDK"
 ],
 "incident_date": "2026-03-27",
 "incident_date_precision": "day",
 "first_reported": "2026-03-27",
 "sources": [
  {
   "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33946",
   "publisher": "NVD",
   "title": "CVE-2026-33946: MCP Ruby SDK is the official Ruby SDK for Model Context Protocol servers and clients.",
   "published_at": "2026-03-27"
  }
 ],
 "source_count": 1,
 "confidence": 0.95,
 "status": "published",
 "origin": "seed_nvd",
 "tags": [
  "CVE-2026-33946",
  "session-hijacking",
  "mcp"
 ],
 "created_at": "2026-10-18T10:04:21.885Z",
 "updated_at": "2026-10-18T10:04:21.885Z"
}