{
  "schema_version": "1.7.0",
  "id": "UBUNTU-CVE-2026-71193",
  "details": "In OpenStack Designate before 22.0.1, zone creation checks (_is_subzone, _is_superzone, and the duplicate-zone DB constraint) are scoped to the target pool only. An authenticated user can bypass these checks by scheduling a zone to a different pool via the AttributeFilter scheduler, creating an overlapping zone that conflicts with another tenant's zone. This enables cross-tenant DNS hijack (redirecting traffic to attacker-controlled IPs) and DNS denial of service (NODATA responses). Exploitation requires a multi-pool deployment with AttributeFilter enabled in scheduler_filters, which is a non-default but documented and supported configuration for self-service tiering.",
  "aliases": [],
  "upstream": [
    "CVE-2026-71193"
  ],
  "related": [],
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H"
    },
    {
      "type": "Ubuntu",
      "score": "medium"
    }
  ],
  "published": "2026-08-13T00:00:00Z",
  "modified": "2026-08-13T00:00:00Z",
  "affected": [
    {
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "designate",
        "purl": "pkg:deb/ubuntu/designate@1:2.1.0-0ubuntu1?arch=source&distro=xenial"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            }
          ]
        }
      ],
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        "1:2.0.0~b2-0ubuntu1",
        "1:2.0.0~b2-0ubuntu2",
        "1:2.0.0~b3-0ubuntu1",
        "1:2.0.0~b3-0ubuntu2",
        "1:2.0.0~rc1-0ubuntu1",
        "1:2.0.0-0ubuntu1",
        "1:2.1.0-0ubuntu1"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "designate",
            "binary_version": "1:2.1.0-0ubuntu1"
          },
          {
            "binary_name": "designate-agent",
            "binary_version": "1:2.1.0-0ubuntu1"
          },
          {
            "binary_name": "designate-api",
            "binary_version": "1:2.1.0-0ubuntu1"
          },
          {
            "binary_name": "designate-central",
            "binary_version": "1:2.1.0-0ubuntu1"
          },
          {
            "binary_name": "designate-common",
            "binary_version": "1:2.1.0-0ubuntu1"
          },
          {
            "binary_name": "designate-mdns",
            "binary_version": "1:2.1.0-0ubuntu1"
          },
          {
            "binary_name": "designate-pool-manager",
            "binary_version": "1:2.1.0-0ubuntu1"
          },
          {
            "binary_name": "designate-sink",
            "binary_version": "1:2.1.0-0ubuntu1"
          },
          {
            "binary_name": "designate-zone-manager",
            "binary_version": "1:2.1.0-0ubuntu1"
          },
          {
            "binary_name": "python-designate",
            "binary_version": "1:2.1.0-0ubuntu1"
          }
        ]
      }
    },
    {
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "designate",
        "purl": "pkg:deb/ubuntu/designate@1:6.0.1-0ubuntu1.2?arch=source&distro=bionic"
      },
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          "type": "ECOSYSTEM",
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              "introduced": "0"
            }
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        }
      ],
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        "1:6.0.0~b2-0ubuntu1",
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        "1:6.0.0~rc1-0ubuntu1",
        "1:6.0.0-0ubuntu1",
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        "1:6.0.1-0ubuntu1.2"
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            "binary_name": "designate-zone-manager",
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          },
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            "binary_name": "python-designate",
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        ]
      }
    },
    {
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "designate",
        "purl": "pkg:deb/ubuntu/designate@1:10.0.2-0ubuntu1?arch=source&distro=focal"
      },
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          },
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          },
          {
            "binary_name": "designate-worker",
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          },
          {
            "binary_name": "designate-zone-manager",
            "binary_version": "1:10.0.2-0ubuntu1"
          },
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            "binary_name": "python3-designate",
            "binary_version": "1:10.0.2-0ubuntu1"
          }
        ]
      }
    },
    {
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "designate",
        "purl": "pkg:deb/ubuntu/designate@1:14.0.4-0ubuntu1?arch=source&distro=jammy"
      },
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              "introduced": "0"
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        "1:13.0.0+git2021120810.aa798fc0-0ubuntu1",
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          },
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            "binary_name": "designate-api",
            "binary_version": "1:14.0.4-0ubuntu1"
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            "binary_name": "designate-central",
            "binary_version": "1:14.0.4-0ubuntu1"
          },
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            "binary_version": "1:14.0.4-0ubuntu1"
          },
          {
            "binary_name": "designate-mdns",
            "binary_version": "1:14.0.4-0ubuntu1"
          },
          {
            "binary_name": "designate-pool-manager",
            "binary_version": "1:14.0.4-0ubuntu1"
          },
          {
            "binary_name": "designate-producer",
            "binary_version": "1:14.0.4-0ubuntu1"
          },
          {
            "binary_name": "designate-sink",
            "binary_version": "1:14.0.4-0ubuntu1"
          },
          {
            "binary_name": "designate-worker",
            "binary_version": "1:14.0.4-0ubuntu1"
          },
          {
            "binary_name": "designate-zone-manager",
            "binary_version": "1:14.0.4-0ubuntu1"
          },
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            "binary_version": "1:14.0.4-0ubuntu1"
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        "name": "designate",
        "purl": "pkg:deb/ubuntu/designate@1:18.0.0-0ubuntu1?arch=source&distro=noble"
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            "binary_version": "1:22.0.0-0ubuntu2"
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            "binary_version": "1:22.0.0-0ubuntu2"
          },
          {
            "binary_name": "designate-producer",
            "binary_version": "1:22.0.0-0ubuntu2"
          },
          {
            "binary_name": "designate-sink",
            "binary_version": "1:22.0.0-0ubuntu2"
          },
          {
            "binary_name": "designate-worker",
            "binary_version": "1:22.0.0-0ubuntu2"
          },
          {
            "binary_name": "designate-zone-manager",
            "binary_version": "1:22.0.0-0ubuntu2"
          },
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        ]
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    }
  ],
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-71193"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-71193"
    },
    {
      "type": "REPORT",
      "url": "https://bugs.launchpad.net/designate/+bug/2160533"
    },
    {
      "type": "REPORT",
      "url": "https://security.openstack.org/ossa/OSSA-2026-034.html"
    },
    {
      "type": "REPORT",
      "url": "https://launchpad.net/bugs/2160533"
    },
    {
      "type": "REPORT",
      "url": "https://www.openwall.com/lists/oss-security/2026/08/11/6"
    }
  ]
}