UBUNTU-CVE-2026-71194

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Source
https://ubuntu.com/security/CVE-2026-71194
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-71194.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-71194
Upstream
Published
2026-08-12T23:17:00Z
Modified
2026-08-19T11:09:40Z
Severity
  • 6.8 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
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.

References

Affected packages

Ubuntu:16.04:LTS
designate

Package

Name
designate
Purl
pkg:deb/ubuntu/designate?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1:1.*
1:1.0.0-0ubuntu1
1:2.*
1:2.0.0~b1-0ubuntu1
1:2.0.0~b2-0ubuntu1
1:2.0.0~b2-0ubuntu2
1:2.0.0~b3-0ubuntu1
1:2.0.0~b3-0ubuntu2
1:2.0.0~rc1-0ubuntu1
1:2.0.0-0ubuntu1
1:2.1.0-0ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "designate",
            "binary_version": "1:2.1.0-0ubuntu1"
        },
        {
            "binary_name": "designate-agent",
            "binary_version": "1:2.1.0-0ubuntu1"
        },
        {
            "binary_name": "designate-api",
            "binary_version": "1:2.1.0-0ubuntu1"
        },
        {
            "binary_name": "designate-central",
            "binary_version": "1:2.1.0-0ubuntu1"
        },
        {
            "binary_name": "designate-common",
            "binary_version": "1:2.1.0-0ubuntu1"
        },
        {
            "binary_name": "designate-mdns",
            "binary_version": "1:2.1.0-0ubuntu1"
        },
        {
            "binary_name": "designate-pool-manager",
            "binary_version": "1:2.1.0-0ubuntu1"
        },
        {
            "binary_name": "designate-sink",
            "binary_version": "1:2.1.0-0ubuntu1"
        },
        {
            "binary_name": "designate-zone-manager",
            "binary_version": "1:2.1.0-0ubuntu1"
        },
        {
            "binary_name": "python-designate",
            "binary_version": "1:2.1.0-0ubuntu1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-71194.json"
Ubuntu:18.04:LTS
designate

Package

Name
designate
Purl
pkg:deb/ubuntu/designate?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1:5.*
1:5.0.0-0ubuntu1
1:6.*
1:6.0.0~b1-0ubuntu1
1:6.0.0~b1-0ubuntu2
1:6.0.0~b2-0ubuntu1
1:6.0.0~b3-0ubuntu1
1:6.0.0~rc1-0ubuntu1
1:6.0.0-0ubuntu1
1:6.0.1-0ubuntu1
1:6.0.1-0ubuntu1.2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "designate",
            "binary_version": "1:6.0.1-0ubuntu1.2"
        },
        {
            "binary_name": "designate-agent",
            "binary_version": "1:6.0.1-0ubuntu1.2"
        },
        {
            "binary_name": "designate-api",
            "binary_version": "1:6.0.1-0ubuntu1.2"
        },
        {
            "binary_name": "designate-central",
            "binary_version": "1:6.0.1-0ubuntu1.2"
        },
        {
            "binary_name": "designate-common",
            "binary_version": "1:6.0.1-0ubuntu1.2"
        },
        {
            "binary_name": "designate-mdns",
            "binary_version": "1:6.0.1-0ubuntu1.2"
        },
        {
            "binary_name": "designate-pool-manager",
            "binary_version": "1:6.0.1-0ubuntu1.2"
        },
        {
            "binary_name": "designate-producer",
            "binary_version": "1:6.0.1-0ubuntu1.2"
        },
        {
            "binary_name": "designate-sink",
            "binary_version": "1:6.0.1-0ubuntu1.2"
        },
        {
            "binary_name": "designate-worker",
            "binary_version": "1:6.0.1-0ubuntu1.2"
        },
        {
            "binary_name": "designate-zone-manager",
            "binary_version": "1:6.0.1-0ubuntu1.2"
        },
        {
            "binary_name": "python-designate",
            "binary_version": "1:6.0.1-0ubuntu1.2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-71194.json"
Ubuntu:20.04:LTS
designate

Package

Name
designate
Purl
pkg:deb/ubuntu/designate?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1:9.*
1:9.0.0-0ubuntu1
1:10.*
1:10.0.0~b1~git2019121610.cdac0fc2-0ubuntu1
1:10.0.0~b1~git2019121610.cdac0fc2-0ubuntu2
1:10.0.0~b2~git2020021416.8b5ec128-0ubuntu2
1:10.0.0~b3~git2020032414.dd359ba3-0ubuntu1
1:10.0.0~b3~git2020041012.9ed2623a-0ubuntu1
1:10.0.0-0ubuntu0.20.04.1
1:10.0.1-0ubuntu1
1:10.0.2-0ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "designate",
            "binary_version": "1:10.0.2-0ubuntu1"
        },
        {
            "binary_name": "designate-agent",
            "binary_version": "1:10.0.2-0ubuntu1"
        },
        {
            "binary_name": "designate-api",
            "binary_version": "1:10.0.2-0ubuntu1"
        },
        {
            "binary_name": "designate-central",
            "binary_version": "1:10.0.2-0ubuntu1"
        },
        {
            "binary_name": "designate-common",
            "binary_version": "1:10.0.2-0ubuntu1"
        },
        {
            "binary_name": "designate-mdns",
            "binary_version": "1:10.0.2-0ubuntu1"
        },
        {
            "binary_name": "designate-pool-manager",
            "binary_version": "1:10.0.2-0ubuntu1"
        },
        {
            "binary_name": "designate-producer",
            "binary_version": "1:10.0.2-0ubuntu1"
        },
        {
            "binary_name": "designate-sink",
            "binary_version": "1:10.0.2-0ubuntu1"
        },
        {
            "binary_name": "designate-worker",
            "binary_version": "1:10.0.2-0ubuntu1"
        },
        {
            "binary_name": "designate-zone-manager",
            "binary_version": "1:10.0.2-0ubuntu1"
        },
        {
            "binary_name": "python3-designate",
            "binary_version": "1:10.0.2-0ubuntu1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-71194.json"
Ubuntu:22.04:LTS
designate

Package

Name
designate
Purl
pkg:deb/ubuntu/designate?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1:13.*
1:13.0.0-0ubuntu1
1:13.0.0+git2021120810.aa798fc0-0ubuntu1
1:13.0.0+git2022011215.bff3d5f6-0ubuntu1
1:13.0.0+git2022030310.8ce022a7-0ubuntu1
1:14.*
1:14.0.0-0ubuntu1
1:14.0.1-0ubuntu1
1:14.0.2-0ubuntu1
1:14.0.3-0ubuntu1
1:14.0.4-0ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "designate",
            "binary_version": "1:14.0.4-0ubuntu1"
        },
        {
            "binary_name": "designate-agent",
            "binary_version": "1:14.0.4-0ubuntu1"
        },
        {
            "binary_name": "designate-api",
            "binary_version": "1:14.0.4-0ubuntu1"
        },
        {
            "binary_name": "designate-central",
            "binary_version": "1:14.0.4-0ubuntu1"
        },
        {
            "binary_name": "designate-common",
            "binary_version": "1:14.0.4-0ubuntu1"
        },
        {
            "binary_name": "designate-mdns",
            "binary_version": "1:14.0.4-0ubuntu1"
        },
        {
            "binary_name": "designate-pool-manager",
            "binary_version": "1:14.0.4-0ubuntu1"
        },
        {
            "binary_name": "designate-producer",
            "binary_version": "1:14.0.4-0ubuntu1"
        },
        {
            "binary_name": "designate-sink",
            "binary_version": "1:14.0.4-0ubuntu1"
        },
        {
            "binary_name": "designate-worker",
            "binary_version": "1:14.0.4-0ubuntu1"
        },
        {
            "binary_name": "designate-zone-manager",
            "binary_version": "1:14.0.4-0ubuntu1"
        },
        {
            "binary_name": "python3-designate",
            "binary_version": "1:14.0.4-0ubuntu1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-71194.json"
Ubuntu:24.04:LTS
designate

Package

Name
designate
Purl
pkg:deb/ubuntu/designate?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1:17.*
1:17.0.0-0ubuntu2
1:17.0.1+git2023121308.d90691f3-0ubuntu1
1:17.0.1+git2024011916.002005a4-0ubuntu2
1:18.*
1:18.0.0~rc1-0ubuntu1
1:18.0.0-0ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "designate",
            "binary_version": "1:18.0.0-0ubuntu1"
        },
        {
            "binary_name": "designate-agent",
            "binary_version": "1:18.0.0-0ubuntu1"
        },
        {
            "binary_name": "designate-api",
            "binary_version": "1:18.0.0-0ubuntu1"
        },
        {
            "binary_name": "designate-central",
            "binary_version": "1:18.0.0-0ubuntu1"
        },
        {
            "binary_name": "designate-common",
            "binary_version": "1:18.0.0-0ubuntu1"
        },
        {
            "binary_name": "designate-mdns",
            "binary_version": "1:18.0.0-0ubuntu1"
        },
        {
            "binary_name": "designate-pool-manager",
            "binary_version": "1:18.0.0-0ubuntu1"
        },
        {
            "binary_name": "designate-producer",
            "binary_version": "1:18.0.0-0ubuntu1"
        },
        {
            "binary_name": "designate-sink",
            "binary_version": "1:18.0.0-0ubuntu1"
        },
        {
            "binary_name": "designate-worker",
            "binary_version": "1:18.0.0-0ubuntu1"
        },
        {
            "binary_name": "designate-zone-manager",
            "binary_version": "1:18.0.0-0ubuntu1"
        },
        {
            "binary_name": "python3-designate",
            "binary_version": "1:18.0.0-0ubuntu1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-71194.json"
Ubuntu:26.04:LTS
designate

Package

Name
designate
Purl
pkg:deb/ubuntu/designate?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1:21.*
1:21.0.0-0ubuntu1
1:21.0.0-0ubuntu2
1:21.0.0+git20260121.19.145042f4-0ubuntu1
1:22.*
1:22.0.0~rc1-0ubuntu1
1:22.0.0-0ubuntu1
1:22.0.0-0ubuntu2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "designate",
            "binary_version": "1:22.0.0-0ubuntu2"
        },
        {
            "binary_name": "designate-agent",
            "binary_version": "1:22.0.0-0ubuntu2"
        },
        {
            "binary_name": "designate-api",
            "binary_version": "1:22.0.0-0ubuntu2"
        },
        {
            "binary_name": "designate-central",
            "binary_version": "1:22.0.0-0ubuntu2"
        },
        {
            "binary_name": "designate-common",
            "binary_version": "1:22.0.0-0ubuntu2"
        },
        {
            "binary_name": "designate-mdns",
            "binary_version": "1:22.0.0-0ubuntu2"
        },
        {
            "binary_name": "designate-pool-manager",
            "binary_version": "1:22.0.0-0ubuntu2"
        },
        {
            "binary_name": "designate-producer",
            "binary_version": "1:22.0.0-0ubuntu2"
        },
        {
            "binary_name": "designate-sink",
            "binary_version": "1:22.0.0-0ubuntu2"
        },
        {
            "binary_name": "designate-worker",
            "binary_version": "1:22.0.0-0ubuntu2"
        },
        {
            "binary_name": "designate-zone-manager",
            "binary_version": "1:22.0.0-0ubuntu2"
        },
        {
            "binary_name": "python3-designate",
            "binary_version": "1:22.0.0-0ubuntu2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-71194.json"