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VulnerabilityPublished

CVE-2026-71193: OpenStack Designate · Incorrect Authorization

Affects OpenStack DesignateSource CVE Database V5

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Not known to be exploited · CVSS 9.6 Critical · fixed in 22.0.1 : patch OpenStack Designate as a priority.

Data as of 10 Nov 2026, 23:24 UTC

CVSS 3.1 base score
9.6Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.5% chance of exploitation in 30 days – higher than 44% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 22.0.1, 21.0.1, 20.0.2
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 12 Aug 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 10 Nov 2026.

What to do

Upgrade OpenStack Designate to 22.0.1, 21.0.1 or 20.0.2.

Affected software

ProductAffectedFixed in
OpenStackDesignateAffected
  • >=22.0.0 <22.0.1
Fixed in
  • 22.0.1
OpenStackDesignateAffected
  • >=21.0.0 <21.0.1
Fixed in
  • 21.0.1
OpenStackDesignateAffected
  • >=1.0.0 <20.0.2
Fixed in
  • 20.0.2

AI-suggested

If you cannot patch yet, administrators should consider disabling the AttributeFilter scheduler or avoid multi-pool deployments with this configuration to mitigate the risk. Monitoring for unauthorized zone creations in multi-tenant environments is advised.

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.

References

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