CVE-2026-18661

{
  "etk_id": "ETK-2026-1660",
  "cve_id": "CVE-2026-18661",
  "display_id": "CVE-2026-18661",
  "ghsa_id": "GHSA-gvw6-wq7h-rwp3",
  "euvd_id": "EUVD-2026-101954",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Security-constraint precedence error in Eclipse Jetty annotations",
  "summary": "Eclipse Jetty annotation modules may fail to enforce intended URL access restrictions for affected servlet deployments. An attacker may access routes that should be restricted when a servlet uses both annotation-based security and web.xml rules, has multiple URL mappings, and only some mappings are covered by a descriptor-based constraint.",
  "mitigation": "Avoid this mixed security configuration: do not combine annotation-based servlet security with selective web.xml constraints on a multi-mapped servlet. Review affected mappings and enforce authorization consistently for every exposed URL pattern.",
  "vendor": "Eclipse Foundation",
  "product": "Eclipse Jetty",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 12.1.0, <= 12.1.11"
      ],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "org.eclipse.jetty.ee11:jetty-ee11-annotations",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 12.1.0, <= 12.1.11",
        ">= 12.0.0, <= 12.0.38"
      ],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "org.eclipse.jetty.ee10:jetty-ee10-annotations",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 12.1.0, <= 12.1.11",
        ">= 12.0.0, <= 12.0.38"
      ],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "org.eclipse.jetty.ee9:jetty-ee9-annotations",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 12.1.0, <= 12.1.11",
        ">= 12.0.0, <= 12.0.38"
      ],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "org.eclipse.jetty.ee8:jetty-ee8-annotations",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 11.0.0, <= 11.0.32",
        ">= 10.0.0, <= 10.0.32",
        ">= 9.4.0, <= 9.4.64"
      ],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "org.eclipse.jetty:jetty-annotations",
      "purl": null
    }
  ],
  "cwes": null,
  "cvss_score": 8.8,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N",
  "epss_score": 0.0034,
  "epss_percentile": 0.2549,
  "epss_asof": "2026-10-20",
  "automation": "contextual",
  "check": true,
  "check_confidence_basis": "mechanism_verified",
  "exploit": false,
  "pipeline_minutes": 14.197273,
  "t0_at": "2026-10-15T09:01:28.668000+00:00",
  "signals": {
    "check": {
      "at": "2026-10-15T09:38:53.312719+00:00",
      "days": 0.025979684247685184,
      "is_lower_bound": false,
      "measured_at": "2026-10-15T09:01:28.668000+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-10-15T09:01:28.668000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-15T09:01:28.668000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-18661"
    }
  }
}