{"id":"DEBIAN-CVE-2026-71194","details":"In OpenStack Designate before 22.0.2, the mDNS handler performs pool-blind lookups when resolving record queries and NOTIFY requests. When two zones with the same name exist across different pools, the lookup fails with a deterministic error, causing the handler to return REFUSED for all DNS queries through that path. The _handle_notify path is exploitable via a single unauthenticated UDP packet. This is independently reachable through the cross-tenant zone overlap described in a different recent CVE, and also affects legitimate same-tenant cross-pool configurations. BIND9 views do not mitigate this issue as mDNS is a shared service upstream of any view configuration.","modified":"2026-09-10T08:47:24.090386266Z","published":"2026-08-12T23:17:22.170Z","upstream":["CVE-2026-71194"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-71194"}],"affected":[{"package":{"name":"designate","ecosystem":"Debian:12","purl":"pkg:deb/debian/designate?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:15.0.2-0+deb11u1"}]}],"versions":["1:15.0.0-4"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-71194.json"}},{"package":{"name":"designate","ecosystem":"Debian:13","purl":"pkg:deb/debian/designate?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:20.0.0-2+deb13u1"}]}],"versions":["1:20.0.0-2"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-71194.json"}},{"package":{"name":"designate","ecosystem":"Debian:14","purl":"pkg:deb/debian/designate?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:22.0.0-2"}]}],"versions":["1:20.0.0-2","1:21.0.0-1","1:21.0.0-2","1:21.0.0~rc1-1","1:21.0.0~rc1-2","1:21.0.0~rc1-3","1:21.0.0~rc1-4","1:22.0.0-1","1:22.0.0~rc1-1","1:22.0.0~rc1-2","1:22.0.0~rc1-3"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-71194.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H"}]}