CVE-2026-71193

CRITICALPre-NVD 9.69.6—
EchelonGraph scoreMEDIUM confidence

Score 9.6 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-13. A secondary CVSS source baseline 9.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
9.6EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 9.6Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

In OpenStack Designate before 22.0.1, zone creation checks (_is_subzone, _is_superzone, and the duplicate-zone DB constraint) are scoped to the target pool only. An authenticated user can bypass these checks by scheduling a zone to a different pool via the AttributeFilter scheduler, creating an overlapping zone that conflicts with another tenant's zone. This enables cross-tenant DNS hijack (redirecting traffic to attacker-controlled IPs) and DNS denial of service (NODATA responses). Exploitation requires a multi-pool deployment with AttributeFilter enabled in scheduler_filters, which is a non-default but documented and supported configuration for self-service tiering.

CVSS v3
9.6
EG Score
9.6CRITICALmedium confidence
EG Risk
43
EG Risk 43/100CISA 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
Severity96% × 45%
Exploitation1% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.5%
EPSS %ILE
42nd
KEV
Not listed

CISA SSVCTrack at every mission impact level.

A fix is available. Apply it within your standard update timelines.

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 Sep 30, 2026
⚠️ Active exploitation confirmed. Patch available.
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.dev399 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-2026-71193(1)

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

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntupython3-designate (1:10.0.2-0ubuntu1+esm1) @ focal2026-10-05ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

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.

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 43× in last 7d / 187× 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 369 total refreshes for this CVE.

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

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-71193?
CVE-2026-71193 is a critical vulnerability published on August 12, 2026. In OpenStack Designate before 22.0.1, zone creation checks (issubzone, issuperzone, and the duplicate-zone DB constraint) are scoped to the target pool only. An authenticated user can bypass these checks by scheduling a zone to a different pool via the AttributeFilter scheduler, creating an…
When was CVE-2026-71193 disclosed?
CVE-2026-71193 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-2026-71193 actively exploited?
CVE-2026-71193 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (42nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-71193?
CVE-2026-71193 has a CVSS base score of 9.6 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-71193?
A fix for CVE-2026-71193 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-71193 are linked in the Vendor Advisories panel on this page.

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