PatchTheCEVCVE-2026-71194: In OpenStack Designate before 22.0.2, the mDNS handler performs pool-blind lookups when resolving record queri
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This month
MEDIUM 6.8REMOTE
CVE-2026-71194 is a medium-severity flaw (CVSS 6.8) affecting affected software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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-
Why this priority
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 6.8 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | High |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.5% (top 57%) |
| CISA exploited list | No |
| Weakness | CWE-669 |
| Published | 2026-08-12 |
| Last modified | 2026-10-23 |
Publisher (CNA): MITRE
Timeline
- Published CVE record published
- Updated Record last modified
Exact fixes by distribution
Fedora 46 · clementine · FIXED · 1.4.2-1.fc46 · FEDORA-2026-3e748ef4d3 · source
sudo dnf upgrade --advisory=FEDORA-2026-3e748ef4d3
Debian 12 · designate · FIXED · 1:15.0.2-0+deb11u1
sudo apt update && sudo apt install --only-upgrade designate
dpkg --compare-versions "$(dpkg-query -W -f='${Version}' designate)" ge "1:15.0.2-0+deb11u1" && echo PATCHED || echo STILL-VULNERABLE
Debian 13 · designate · FIXED · 1:20.0.0-2+deb13u1
sudo apt update && sudo apt install --only-upgrade designate
dpkg --compare-versions "$(dpkg-query -W -f='${Version}' designate)" ge "1:20.0.0-2+deb13u1" && echo PATCHED || echo STILL-VULNERABLE
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.