{
 "id": "AIR-2026-1187",
 "slug": "cve-2026-47751-claude-code-action-vulnerable-to-malicious-mc",
 "title": "CVE-2026-47751: Claude Code Action vulnerable to malicious MCP configuration",
 "summary": "An insecure configuration in Claude Code Action allows attackers opening pull requests with malicious .mcp.json files to execute code on runners. The vulnerability is fixed in version 1.0.74.",
 "type": "attack_on_ai",
 "categories": [
  "infra_vuln",
  "supply_chain"
 ],
 "severity": 2,
 "targets": [
  "Anthropic",
  "framework_or_tooling"
 ],
 "products": [
  "Claude Code Action"
 ],
 "incident_date": "2026-07-16",
 "incident_date_precision": "day",
 "first_reported": "2026-07-16",
 "sources": [
  {
   "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-47751",
   "publisher": "NVD",
   "title": "CVE-2026-47751: Claude Code Action is a general-purpose GitHub action that runs Claude Code on GitHub pull requests and issues.",
   "published_at": "2026-07-16"
  }
 ],
 "source_count": 1,
 "confidence": 0.95,
 "status": "published",
 "origin": "seed_nvd",
 "tags": [
  "CVE-2026-47751",
  "mcp",
  "rce"
 ],
 "created_at": "2026-10-18T10:04:21.885Z",
 "updated_at": "2026-10-18T10:04:21.885Z"
}