CVE-2026-71194

MEDIUMPre-NVD 6.86.8—
EchelonGraph scoreHIGH confidence

Score 6.8 from GitHub Security Advisory published 2026-08-13. a secondary CVSS source baseline 6.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
6.8EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 6.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
6.8
EG Score
6.8(high)
EG Risk
31(Track)
EG Risk 31/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity68% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
41%
KEV
Not listed

Published

August 12, 2026

Last Modified

August 13, 2026

Advisory Details (3)

Auto-updated Aug 12, 2026
⚠️ Active exploitation confirmed. No patch confirmed yet.
generic

oss-security - [OSSA-2026-034] OpenStack Designate: Cross-tenant DNS zone overlap and mDNS DoS via pool scheduling (CVE-2026-71193, CVE-2026-71194)

https://www.openwall.com/lists/oss-security/2026/08/11/6
generic

OSSA-2026-034: Cross-tenant DNS zone overlap and mDNS DoS via pool scheduling — OpenStack Security Advisories 0.0.1.dev368 documentation

https://security.openstack.org/ossa/OSSA-2026-034.html
generic🔴 Active Exploitation

Bug #2160533 “[OSSA-2026-034] Designate cross-tenant DNS zone ov...” : Bugs : Designate

https://launchpad.net/bugs/2160533

Vendor Advisories for CVE-2026-71194(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 23× in last 7d / 31× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-08-20 22:56 UTCEPSS rescore
  2. 2026-08-20 12:31 UTCEG score recompute
  3. 2026-08-20 12:31 UTCGHSA enrichment
  4. 2026-08-19 17:04 UTCEPSS rescore
  5. 2026-08-19 12:48 UTCEG score recompute
  6. 2026-08-19 12:47 UTCGHSA enrichment
  7. 2026-08-18 13:49 UTCEPSS rescore
  8. 2026-08-18 13:49 UTCEPSS rescore
  9. 2026-08-18 13:03 UTCEG score recompute
  10. 2026-08-18 13:03 UTCGHSA enrichment
  11. 2026-08-17 13:47 UTCEPSS rescore
  12. 2026-08-17 13:19 UTCEG score recompute
  13. 2026-08-17 13:19 UTCGHSA enrichment
  14. 2026-08-16 14:56 UTCEPSS rescore
  15. 2026-08-16 14:56 UTCEPSS rescore
  16. 2026-08-16 13:36 UTCEG score recompute
  17. 2026-08-16 13:36 UTCGHSA enrichment
  18. 2026-08-16 02:15 UTCEPSS rescore
  19. 2026-08-15 13:52 UTCEG score recompute
  20. 2026-08-15 13:52 UTCGHSA enrichment
  21. 2026-08-15 01:31 UTCEPSS rescore
  22. 2026-08-14 14:08 UTCEG score recompute
  23. 2026-08-14 14:08 UTCGHSA enrichment
  24. 2026-08-13 22:00 UTCEPSS rescore
  25. 2026-08-13 14:24 UTCEG score recompute
Show 6 more
  1. 2026-08-13 14:24 UTCGHSA enrichment
  2. 2026-08-13 13:56 UTCEG score recompute
  3. 2026-08-13 13:56 UTCGHSA enrichment
  4. 2026-08-12 23:22 UTCEG score recompute
  5. 2026-08-12 22:36 UTCEG score recompute
  6. 2026-08-12 22:35 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-71194?
CVE-2026-71194 is a medium vulnerability published on August 12, 2026. 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…
When was CVE-2026-71194 disclosed?
CVE-2026-71194 was first published in the National Vulnerability Database on August 12, 2026, with the most recent update on August 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-71194 actively exploited?
CVE-2026-71194 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 58.6% of all scored CVEs.
What is the CVSS score of CVE-2026-71194?
CVE-2026-71194 has a CVSS v3 base score of 6.8 (NVD).
How do I remediate CVE-2026-71194?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-71194, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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