CVE-2026-71194

MEDIUMPre-NVD 6.86.8—
EchelonGraph scoreMEDIUM 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: 0.5%CVSS: 6.8Exploit: None knownExposed services: Not assessed

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

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
6.8MEDIUMmedium confidence
EG Risk
31
EG Risk 31/100CISA SSVC

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%
CISA SSVC: Track at every mission impact level.
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.5%
EPSS %ILE
41st
KEV
Not listed

CISA SSVCTrack at every mission impact level.

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 12, 2026

Last Modified

September 9, 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.

Affected Packages

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
designate1:15.0.0-4
  • every version up to 1:15.0.2-0+deb11u1: fixed in 1:15.0.2-0+deb11u1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
designate1:20.0.0-2
  • every version up to 1:20.0.0-2+deb13u1: fixed in 1:20.0.0-2+deb13u1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
designate1:20.0.0-2 ... 1:22.0.0~rc1-3 (11 versions)
  • every version up to 1:22.0.0-2: fixed in 1:22.0.0-2
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 13× in last 7d / 69× 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.

Showing the most recent 100 of 140 total refreshes for this CVE.

  1. 2026-10-04 23:22 UTCEPSS rescore
  2. 2026-10-04 22:26 UTCGHSA enrichment
  3. 2026-10-03 19:54 UTCEG score recompute
  4. 2026-10-03 19:54 UTCGHSA enrichment
  5. 2026-10-03 14:26 UTCEPSS rescore
  6. 2026-10-02 17:56 UTCEPSS rescore
  7. 2026-10-02 08:08 UTCEG score recompute
  8. 2026-10-02 08:07 UTCGHSA enrichment
  9. 2026-10-01 19:50 UTCEPSS rescore
  10. 2026-09-30 21:52 UTCEG score recompute
  11. 2026-09-30 21:52 UTCGHSA enrichment
  12. 2026-09-30 15:03 UTCEPSS rescore
  13. 2026-09-28 13:52 UTCEPSS rescore
  14. 2026-09-28 09:34 UTCEG score recompute
  15. 2026-09-28 09:34 UTCGHSA enrichment
  16. 2026-09-27 13:48 UTCEPSS rescore
  17. 2026-09-27 09:50 UTCEG score recompute
  18. 2026-09-27 09:50 UTCGHSA enrichment
  19. 2026-09-26 15:59 UTCEPSS rescore
  20. 2026-09-25 03:38 UTCEG score recompute
  21. 2026-09-25 03:38 UTCGHSA enrichment
  22. 2026-09-23 23:45 UTCEG score recompute
  23. 2026-09-23 23:45 UTCGHSA enrichment
  24. 2026-09-23 17:54 UTCEPSS rescore
  25. 2026-09-23 00:01 UTCEG score recompute
Show 75 more
  1. 2026-09-23 00:01 UTCGHSA enrichment
  2. 2026-09-22 00:17 UTCEG score recompute
  3. 2026-09-22 00:17 UTCGHSA enrichment
  4. 2026-09-21 21:09 UTCEPSS rescore
  5. 2026-09-21 00:14 UTCEG score recompute
  6. 2026-09-21 00:14 UTCGHSA enrichment
  7. 2026-09-20 20:16 UTCEPSS rescore
  8. 2026-09-19 23:58 UTCEG score recompute
  9. 2026-09-19 23:58 UTCGHSA enrichment
  10. 2026-09-19 00:14 UTCEG score recompute
  11. 2026-09-19 00:14 UTCGHSA enrichment
  12. 2026-09-18 19:28 UTCEPSS rescore
  13. 2026-09-18 00:31 UTCEG score recompute
  14. 2026-09-18 00:31 UTCGHSA enrichment
  15. 2026-09-17 00:15 UTCEG score recompute
  16. 2026-09-17 00:15 UTCGHSA enrichment
  17. 2026-09-16 14:08 UTCEPSS rescore
  18. 2026-09-16 05:15 UTCEPSS rescore
  19. 2026-09-15 15:43 UTCEG score recompute
  20. 2026-09-15 15:42 UTCGHSA enrichment
  21. 2026-09-15 03:12 UTCEPSS rescore
  22. 2026-09-14 15:53 UTCEG score recompute
  23. 2026-09-14 15:53 UTCGHSA enrichment
  24. 2026-09-13 16:09 UTCGHSA enrichment
  25. 2026-09-12 16:25 UTCEG score recompute
  26. 2026-09-12 16:25 UTCGHSA enrichment
  27. 2026-09-12 15:02 UTCEPSS rescore
  28. 2026-09-11 16:41 UTCEG score recompute
  29. 2026-09-11 16:41 UTCGHSA enrichment
  30. 2026-09-11 14:53 UTCEPSS rescore
  31. 2026-09-10 16:57 UTCEG score recompute
  32. 2026-09-10 16:57 UTCGHSA enrichment
  33. 2026-09-10 09:35 UTCEPSS rescore
  34. 2026-09-09 16:14 UTCGHSA enrichment
  35. 2026-09-09 05:09 UTCEG score recompute
  36. 2026-09-09 05:09 UTCGHSA enrichment
  37. 2026-09-08 22:01 UTCEPSS rescore
  38. 2026-09-08 01:06 UTCEG score recompute
  39. 2026-09-08 01:06 UTCGHSA enrichment
  40. 2026-09-07 01:22 UTCEG score recompute
  41. 2026-09-07 01:22 UTCGHSA enrichment
  42. 2026-09-06 13:48 UTCEPSS rescore
  43. 2026-09-06 00:23 UTCEG score recompute
  44. 2026-09-06 00:23 UTCGHSA enrichment
  45. 2026-09-05 00:39 UTCEG score recompute
  46. 2026-09-05 00:39 UTCGHSA enrichment
  47. 2026-09-04 05:07 UTCEPSS rescore
  48. 2026-09-03 23:15 UTCGHSA enrichment
  49. 2026-09-02 23:24 UTCEG score recompute
  50. 2026-09-02 23:24 UTCGHSA enrichment
  51. 2026-09-02 14:12 UTCEPSS rescore
  52. 2026-09-01 13:54 UTCEPSS rescore
  53. 2026-09-01 11:38 UTCEG score recompute
  54. 2026-09-01 11:38 UTCGHSA enrichment
  55. 2026-09-01 04:40 UTCEPSS rescore
  56. 2026-08-31 09:50 UTCEG score recompute
  57. 2026-08-31 09:50 UTCGHSA enrichment
  58. 2026-08-30 19:17 UTCEPSS rescore
  59. 2026-08-30 10:04 UTCEG score recompute
  60. 2026-08-30 10:03 UTCGHSA enrichment
  61. 2026-08-30 01:22 UTCEPSS rescore
  62. 2026-08-29 10:19 UTCEG score recompute
  63. 2026-08-29 10:19 UTCGHSA enrichment
  64. 2026-08-28 21:42 UTCEPSS rescore
  65. 2026-08-28 10:34 UTCEG score recompute
  66. 2026-08-28 10:34 UTCGHSA enrichment
  67. 2026-08-27 10:40 UTCEG score recompute
  68. 2026-08-27 10:40 UTCGHSA enrichment
  69. 2026-08-26 14:47 UTCEPSS rescore
  70. 2026-08-26 10:56 UTCEG score recompute
  71. 2026-08-26 10:56 UTCGHSA enrichment
  72. 2026-08-25 13:49 UTCEPSS rescore
  73. 2026-08-25 11:12 UTCEG score recompute
  74. 2026-08-25 11:12 UTCGHSA enrichment
  75. 2026-08-24 11:28 UTCEG score recompute

Related CVEs(same product + same CWE)

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 on August 12, 2026, with the most recent update on September 9, 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 0.5% probability of exploitation in the next 30 days (41st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-71194?
CVE-2026-71194 has a CVSS base score of 6.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-71194?
No fix for CVE-2026-71194 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-71194 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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