CVE-2026-112712

{
  "etk_id": "ETK-2026-2184",
  "cve_id": "CVE-2026-112712",
  "display_id": "CVE-2026-112712",
  "ghsa_id": "GHSA-5p92-8765-9fv8",
  "euvd_id": "EUVD-2026-105361",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Path-scoped middleware bypass in @fastify/middie",
  "summary": "@fastify/middie versions before 9.3.6 can skip path-scoped middleware when its mount path is normalized differently from the Fastify route path. An unauthenticated attacker may reach route handlers without authentication, authorization, or rate-limiting middleware when affected path and plugin-prefix configurations are used.",
  "mitigation": "Upgrade @fastify/middie to version 9.3.6 or later. Until upgraded, enforce authorization in a Fastify post-routing hook such as preHandler.",
  "vendor": "npm",
  "product": "npm:@fastify/middie",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 9.0.0, < 9.3.6"
      ],
      "ecosystem": "npm",
      "fixed_versions": [
        "9.3.6"
      ],
      "package_name": "@fastify/middie",
      "purl": "pkg:npm/@fastify/middie"
    }
  ],
  "cwes": [
    436
  ],
  "cvss_score": 9.1,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": true,
  "check_confidence_basis": "assessed",
  "exploit": false,
  "pipeline_minutes": 8.43253065,
  "t0_at": "2026-10-20T20:43:48.681000+00:00",
  "signals": {
    "check": {
      "at": "2026-10-20T21:20:56.058068+00:00",
      "days": 0.025779827175925925,
      "is_lower_bound": false,
      "measured_at": "2026-10-20T20:43:48.681000+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-10-20T13:50:32+00:00",
      "days": -0.28699862268518517,
      "is_lower_bound": false,
      "measured_at": "2026-10-20T20:43:48.681000+00:00",
      "url": "https://github.com/fastify/middie/security/advisories/GHSA-5p92-8765-9fv8"
    }
  }
}