DSA-6452-1 designate - security update

unknownCVE-2026-71193 CVE-2026-71194

Two security vulnerabilities were discovered in Designate, the OpenStack DNS-as-a-Service component, which could result in a tenant manipulating the zones of a different tenant, resulting in denial of service or DNS hijacking. https://security-tracker.debian.org/tracker/DSA-6452-1

CSIRTS triage

vendor: OpenStack product: Designate Authentication bypass Denial of service

What: Tenants can manipulate DNS zones belonging to other tenants, enabling denial of service or DNS hijacking.
Who is affected: OpenStack Designate deployments allowing multi-tenant DNS zone configuration.
Urgency: Critical due to potential for DNS hijacking and cross-tenant denial of service; no exploitation status reported.
Action: Apply Debian security update DSA-6452-1 or equivalent patches for CVE-2026-71193 and CVE-2026-71194.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: Debian Security Advisories (INTL · vendor-psirt · site)
Severity: unknown
Published: 2026-08-19
Exploitation: Not in CISA KEV at last sync

Original advisory: https://lists.debian.org/debian-security-announce/2026/msg00363.html

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-711930.37% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 30% of all EPSS-scored CVEs.
Low exploitation riskCVE-2026-711940.30% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 23% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-71193	coverage & exploitation status	NVD · CVE.org
CVE-2026-71194	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.