MEDIUM 6.8 NVD
CVE-2026-71194
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 sa
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.
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
This medium severity vulnerability with a CVSS score of 6.8 was published on 2026-08-12 via NVD.
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