CVE-2026-111816

{
  "etk_id": "ETK-2026-2350",
  "cve_id": "CVE-2026-111816",
  "display_id": "CVE-2026-111816",
  "ghsa_id": "GHSA-2g9h-67x8-9xr9",
  "euvd_id": "EUVD-2026-107493",
  "status": "published",
  "anchor_state": "anchored",
  "title": "HTTP response desynchronization in Apache Traffic Server",
  "summary": "Apache Traffic Server deployments running 8.0.0 through 8.1.11, 9.0.0 through 9.2.15, 10.0.0 through 10.1.4, or 10.2.0 are affected. An attacker who can cause Traffic Server to process a malformed chunked 302 response from an upstream peer may induce inconsistent response parsing, leading to cache poisoning or response desynchronization.",
  "mitigation": "Upgrade to Traffic Server 9.2.16, 10.1.5, or 10.2.1, as appropriate for the deployed branch. Migrate affected 8.x deployments to a supported fixed branch, since no 8.x fixed release is listed.",
  "vendor": "Apache Software Foundation",
  "product": "Apache Traffic Server",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 8.0.0, <= 8.1.11",
        ">= 9.0.0, <= 9.2.15",
        ">= 10.0.0, <= 10.1.4",
        "10.2.0"
      ],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "Apache Traffic Server",
      "purl": null
    }
  ],
  "cwes": [
    444
  ],
  "cvss_score": 9.2,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:L/SI:H/SA:N",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 33.5077448,
  "t0_at": "2026-10-21T18:26:32.566000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-10-21T18:26:32.566000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-21T18:26:32.566000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-111816"
    }
  }
}