9.6

CVE-2026-71193

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.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerOpenStack
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Produkt Designate
Default Statusunaffected
Version 1.0.0
Version < 20.0.2
Status affected
Version 21.0.0
Version < 21.0.1
Status affected
Version 22.0.0
Version < 22.0.1
Status affected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.53% 0.419
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
MITRE 9.6 3.1 5.8
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H
CWE-863 Incorrect Authorization

The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.

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