CVE-2026-62391

HIGHPre-NVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-07-31. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.8%CVSS: 8.1Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

The security fix for CVE-2025-66518 is incomplete. Any client who can access to Apache Kyuubi Server via Kyuubi frontend protocols can bypass server-side config kyuubi.session.local.dir.allowlist via unprefixed Spark config aliases.

This issue affects Apache Kyuubi: from 1.6.0 before 1.12.0.

Users are recommended to upgrade to version 1.12.0, which fixes the issue.

CVSS v3
8.1
EG Score
8.1HIGHmedium confidence
EG Risk
37
EG Risk 37/100CISA 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
Severity81% × 45%
Exploitation1% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.8%
EPSS %ILE
54th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

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

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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

July 31, 2026

Last Modified

August 10, 2026

Advisory Details (1)

Auto-updated Jul 31, 2026
Fix named in the CVE record.
generic
https://lists.apache.org/thread/vo4k4nxz23kfzrpp120nsojb0vrkx4w1

Vendor Advisories for CVE-2026-62391(1)

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

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 14× in last 7d / 73× 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 203 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-62391?
CVE-2026-62391 is a high vulnerability published on July 31, 2026. The security fix for CVE-2025-66518 is incomplete. Any client who can access to Apache Kyuubi Server via Kyuubi frontend protocols can bypass server-side config kyuubi.session.local.dir.allowlist via unprefixed Spark config aliases. This issue affects Apache Kyuubi: from 1.6.0 before 1.12.0. Users…
When was CVE-2026-62391 disclosed?
CVE-2026-62391 was first published on July 31, 2026, with the most recent update on August 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-62391 actively exploited?
CVE-2026-62391 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.8% probability of exploitation in the next 30 days (54th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-62391?
CVE-2026-62391 has a CVSS v3.1 base score of 8.1 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-62391?
A fix for CVE-2026-62391 is available — its CVE record says: "Users are recommended to upgrade to version 1.12.0, which fixes the issue." The vendor advisories EchelonGraph has for CVE-2026-62391 are linked in the Vendor Advisories panel on this page.

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