CVE-2026-77363

{
  "etk_id": "ETK-2026-1400",
  "cve_id": "CVE-2026-77363",
  "display_id": "CVE-2026-77363",
  "ghsa_id": "GHSA-pqh8-4pj7-32xx",
  "euvd_id": "EUVD-2026-97733",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Cross-origin local vault access in obsidian-tc HTTP transport",
  "summary": "obsidian-tc before 1.3.1 exposes its Streamable HTTP transport without Host, Origin, or DNS-rebinding validation. A malicious web page may access the local MCP endpoint and obtain vault access when the service uses the documented loopback configuration with authentication disabled.",
  "mitigation": "Upgrade obsidian-tc to version 1.3.1 or later. Until upgraded, do not run the loopback HTTP transport with authentication disabled and restrict access to the local endpoint.",
  "vendor": "The-40-Thieves",
  "product": "obsidian-tc",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "< 1.3.1"
      ],
      "ecosystem": "npm",
      "fixed_versions": [
        "1.3.1"
      ],
      "package_name": "obsidian-tc",
      "purl": "pkg:npm/obsidian-tc"
    }
  ],
  "cwes": [
    346
  ],
  "cvss_score": 8.8,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
  "epss_score": 0.0016,
  "epss_percentile": 0.0448,
  "epss_asof": "2026-10-20",
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 24.8699643,
  "t0_at": "2026-10-12T17:45:57.107000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-10-12T17:45:57.107000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-12T17:45:57.107000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-77363"
    }
  }
}