CVE-2026-33489

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.4%, top 68% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Elevated
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: Elevated riskExposed: 0

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

CoreDNS is a DNS server that chains plugins. In versions prior to 1.14.3, the transfer plugin can select the wrong ACL stanza when both a parent zone and a more-specific subzone are configured. The longestMatch() function in plugin/transfer/transfer.go uses a lexicographic string comparison instead of an actual longest-suffix match to select the winning zone. As a result, a permissive parent-zone transfer rule can override a restrictive subzone rule depending on zone name ordering (e.g., "example.org." > "a.example.org." lexicographically). This allows an unauthorized remote client to perform AXFR/IXFR for the subzone and retrieve its full zone contents. This issue has been fixed in version 1.14.3.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
65(Attend)
EG Risk 65/100SSVC: Attend

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
Severity75% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
32%
KEV
Not listed

Published

May 5, 2026

Last Modified

July 24, 2026

Advisory Details (2)

Auto-updated May 5, 2026
🔬 Proof of concept available. Patch available. Sources: github.
github Patch Available🟡 PoC Available

Transfer stanza selection uses lexicographic compare (subzone ACL bypass) · Advisory · coredns/coredns · GitHub

https://github.com/coredns/coredns/security/advisories/GHSA-h8mm-c463-wjq3
generic

Release v1.14.3 · coredns/coredns · GitHub

https://github.com/coredns/coredns/releases/tag/v1.14.3

Vendor Advisories for CVE-2026-33489(1)

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

Affected Packages

(1 across 1 ecosystem)
Go(1)
PackageVulnerable rangeFixed inDependents
github.com/coredns/coredns—1.14.3—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 56× 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 205 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-33489?
CVE-2026-33489 is a high vulnerability published on May 5, 2026. CoreDNS is a DNS server that chains plugins. In versions prior to 1.14.3, the transfer plugin can select the wrong ACL stanza when both a parent zone and a more-specific subzone are configured. The longestMatch() function in plugin/transfer/transfer.go uses a lexicographic string comparison instead…
When was CVE-2026-33489 disclosed?
CVE-2026-33489 was first published in the National Vulnerability Database on May 5, 2026, with the most recent update on July 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-33489 actively exploited?
CVE-2026-33489 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 68.0% of all scored CVEs.
What is the CVSS score of CVE-2026-33489?
CVE-2026-33489 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-33489?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-33489, 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.

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