CVE-2026-62966

{
  "etk_id": "ETK-2026-3119",
  "cve_id": "CVE-2026-62966",
  "display_id": "CVE-2026-62966",
  "ghsa_id": "GHSA-8m8p-vhxc-jmjw",
  "euvd_id": "EUVD-2026-114469",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Null-pointer denial of service in ESPAsyncWebServer multipart parsing",
  "summary": "ESPAsyncWebServer versions before 3.11.2 mishandle certain multipart uploads and can dereference a null buffer. A remote unauthenticated attacker may cause an affected ESP32 device to panic and reboot when a reachable route processes request bodies or uploads, such as file-upload or web-OTA endpoints.",
  "mitigation": "Upgrade ESPAsyncWebServer to version 3.11.2. Until upgraded, restrict access to routes that accept multipart bodies or uploads, or disable those routes where feasible.",
  "vendor": "ESP32Async",
  "product": "ESPAsyncWebServer",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "<= 3.11.1"
      ],
      "ecosystem": "actions",
      "fixed_versions": [
        "3.11.2"
      ],
      "package_name": "ESPAsyncWebServer",
      "purl": "pkg:github/ESPAsyncWebServer"
    }
  ],
  "cwes": [
    476
  ],
  "cvss_score": 7.5,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 18.367976083333332,
  "t0_at": "2026-10-30T20:53:37.292000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-10-30T20:53:37.292000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-30T20:53:37.292000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-62966"
    }
  }
}