CVE-2026-110354

{
  "etk_id": "ETK-2026-2383",
  "cve_id": "CVE-2026-110354",
  "display_id": "CVE-2026-110354",
  "ghsa_id": "GHSA-vqpp-w68q-p3f5",
  "euvd_id": "EUVD-2026-108000",
  "status": "published",
  "anchor_state": "anchored",
  "title": "HTTP/1.1 request parsing denial of service in HAProxy",
  "summary": "Affected HAProxy releases can be driven into persistent worker-thread CPU exhaustion by remote, unauthenticated requests using HTTP/1.1 chunked transfer encoding. Repeated requests may occupy all worker threads and prevent normal service until the process is restarted.",
  "mitigation": "Upgrade HAProxy to 3.0.30, 3.2.26, 3.3.17, 3.4.6, or 3.5-dev9, as appropriate. Upgrade affected Enterprise and Kubernetes Ingress Controller editions to their listed fixed releases.",
  "vendor": "HAProxy",
  "product": "HAProxy",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 3.0.0, < 3.0.30",
        ">= 3.2.0, < 3.2.26",
        ">= 3.3.0, < 3.3.17",
        ">= 3.4.0, < 3.4.6",
        ">= 3.5-dev, < 3.5-dev9"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "3.0.30",
        "3.2.26",
        "3.3.17",
        "3.4.6",
        "3.5-dev9"
      ],
      "package_name": "HAProxy",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 3.0r1, < 3.0r1-362.1441",
        ">= 3.2r1, < 3.2r1-378.1259",
        ">= 3.3r1, < 3.3r1-377.1005"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "3.0r1-362.1441",
        "3.2r1-378.1259",
        "3.3r1-377.1005"
      ],
      "package_name": "HAProxy Enterprise Edition",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 3.2.0, < 3.2.17"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "3.2.17"
      ],
      "package_name": "HAProxy Kubernetes Ingress Controller",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 3.2.0, < 3.2.17-ee1",
        ">= 3.0, < 3.0.16-ee17",
        ">= 1.11, < 1.11.14-ee11"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "3.2.17-ee1",
        "3.0.16-ee17",
        "1.11.14-ee11"
      ],
      "package_name": "Kubernetes Ingress Controller Enterprise",
      "purl": null
    }
  ],
  "cwes": [
    835
  ],
  "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": true,
  "check_confidence_basis": "assessed",
  "exploit": false,
  "pipeline_minutes": 14.467926366666667,
  "t0_at": "2026-10-22T02:46:38.255000+00:00",
  "signals": {
    "check": {
      "at": "2026-10-22T03:16:09.904973+00:00",
      "days": 0.020505208020833332,
      "is_lower_bound": false,
      "measured_at": "2026-10-22T02:46:38.255000+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-10-22T02:46:38.255000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-22T02:46:38.255000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-110354"
    }
  }
}