{"id":"CVE-2026-71193","state":"PUBLISHED","title":"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 u","description":"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.","publishedAt":"2026-08-12T22:17:12.516Z","updatedAt":"2026-08-13T13:35:19.251Z","severity":{"score":9.6,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H","source":"mitre"},"assigner":"mitre","products":["OpenStack Designate"],"affected":[{"vendor":"OpenStack","product":"Designate","defaultStatus":"unaffected","versions":[{"version":"1.0.0","status":"affected","lessThan":"20.0.2","versionType":"semver"},{"version":"21.0.0","status":"affected","lessThan":"21.0.1","versionType":"semver"},{"version":"22.0.0","status":"affected","lessThan":"22.0.1","versionType":"semver"}],"repo":"https://opendev.org/openstack/designate"}],"references":["https://launchpad.net/bugs/2160533","https://security.openstack.org/ossa/OSSA-2026-034.html","https://www.openwall.com/lists/oss-security/2026/08/11/6"],"weaknesses":["CWE-863"],"ingestedAt":"2026-10-29T20:12:49.727Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/71xxx/CVE-2026-71193.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-71193","state":"PUBLISHED","datePublished":"2026-08-12T22:17:12.516Z","dateUpdated":"2026-08-13T13:35:19.251Z","assignerShortName":"mitre","assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","dateReserved":"2026-08-05T05:09:31.046Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"OpenStack","product":"Designate","defaultStatus":"unaffected","versions":[{"version":"1.0.0","status":"affected","lessThan":"20.0.2","versionType":"semver"},{"version":"21.0.0","status":"affected","lessThan":"21.0.1","versionType":"semver"},{"version":"22.0.0","status":"affected","lessThan":"22.0.1","versionType":"semver"}],"repo":"https://opendev.org/openstack/designate"}],"references":[{"url":"https://launchpad.net/bugs/2160533","tags":["issue-tracking"]},{"url":"https://security.openstack.org/ossa/OSSA-2026-034.html","tags":["vendor-advisory"]},{"url":"https://www.openwall.com/lists/oss-security/2026/08/11/6","tags":["vendor-advisory","mailing-list"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.6,"baseSeverity":"CRITICAL","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-863","description":"CWE-863 Incorrect Authorization","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"mitre","orgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","dateUpdated":"2026-08-12T22:17:12.516Z"},"x_generator":{"engine":"CVE-Request-form 0.0.1"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:openstack:designate:*:*:*:*:*:*:*:*","versionStartIncluding":"1.0.0","versionEndExcluding":"20.0.2"},{"vulnerable":true,"criteria":"cpe:2.3:a:openstack:designate:*:*:*:*:*:*:*:*","versionStartIncluding":"21.0.0","versionEndExcluding":"21.0.1"},{"vulnerable":true,"criteria":"cpe:2.3:a:openstack:designate:*:*:*:*:*:*:*:*","versionStartIncluding":"22.0.0","versionEndExcluding":"22.0.1"}]}]}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-13T13:33:33.269958Z","id":"CVE-2026-71193","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-13T13:35:19.251Z"}}]}}}