CVE-2026-115701

{
  "etk_id": "ETK-2026-3716",
  "cve_id": "CVE-2026-115701",
  "display_id": "CVE-2026-115701",
  "ghsa_id": null,
  "euvd_id": "EUVD-2026-118103",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Unbounded HTTP/1.1 connection buffering in Cowboy",
  "summary": "Cowboy 2.18.0 and later may accumulate unlimited data from an HTTP/1.1 keep-alive connection while a request handler is still running. An unauthenticated remote attacker could exhaust Erlang VM memory and disrupt service when they can reach an endpoint that keeps requests active long enough.",
  "mitigation": "Update Cowboy to a release containing upstream fix 3a630c07e1521abf63a1b9ea080509aa1337b60d. Do not rely solely on request-line, header, or idle-timeout limits to prevent this condition.",
  "vendor": "ninenines",
  "product": "cowboy",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 2.18.0, < *"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "*"
      ],
      "package_name": "cowboy",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= faf5594fbf74530ace90b0c46c936bdc2cf82081, < 3a630c07e1521abf63a1b9ea080509aa1337b60d"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "3a630c07e1521abf63a1b9ea080509aa1337b60d"
      ],
      "package_name": "ninenines/cowboy",
      "purl": null
    }
  ],
  "cwes": [
    770
  ],
  "cvss_score": 8.2,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": true,
  "check_confidence_basis": "assessed",
  "exploit": false,
  "pipeline_minutes": 18.125165716666668,
  "t0_at": "2026-11-06T10:29:00.314000+00:00",
  "signals": {
    "check": {
      "at": "2026-11-06T11:08:57.087593+00:00",
      "days": 0.027740435104166666,
      "is_lower_bound": false,
      "measured_at": "2026-11-06T10:29:00.314000+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-11-06T10:29:00.314000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-11-06T10:29:00.314000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-115701"
    }
  }
}