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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Designate", "repo": "https://opendev.org/openstack/designate", "vendor": "OpenStack", "versions": [{"lessThan": "20.0.2", "status": "affected", "version": "1.0.0", "versionType": "semver"}, {"lessThan": "21.0.1", "status": "affected", "version": "21.0.0", "versionType": "semver"}, {"lessThan": "22.0.1", "status": "affected", "version": "22.0.0", "versionType": "semver"}]}], "source": "cve@mitre.org"}], "cveTags": [], "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."}], "id": "CVE-2026-71193", "lastModified": "2026-08-12T23:17:22.030", "metrics": {"cvssMetricV31": [{"cvssData": {"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"}, "exploitabilityScore": 3.1, "impactScore": 5.8, "source": "cve@mitre.org", "type": "Secondary"}]}, "published": "2026-08-12T23:17:22.030", "references": [{"source": "cve@mitre.org", "url": "https://launchpad.net/bugs/2160533"}, {"source": "cve@mitre.org", "url": "https://security.openstack.org/ossa/OSSA-2026-034.html"}, {"source": "cve@mitre.org", "url": "https://www.openwall.com/lists/oss-security/2026/08/11/6"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-863"}], "source": "cve@mitre.org", "type": "Primary"}]}

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