CVE-2026-62391

HIGHPre-NVD 8.18.1—
EchelonGraph scoreHIGH 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: 1%CVSS: 8.1Exploit: None knownExposed: 0

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

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
8.1(high)
EG Risk
37(Track)
EG Risk 37/100SSVC: 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
Severity81% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
42%
KEV
Not listed

Published

July 31, 2026

Last Modified

August 10, 2026

Advisory Details (1)

Auto-updated Jul 31, 2026
No patch confirmed yet.
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 27× in last 7d / 84× 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 23:56 UTCEG score recompute
  2. 2026-08-20 23:56 UTCGHSA enrichment
  3. 2026-08-20 22:55 UTCEPSS rescore
  4. 2026-08-20 10:49 UTCGHSA enrichment
  5. 2026-08-19 21:42 UTCEG score recompute
  6. 2026-08-19 21:42 UTCGHSA enrichment
  7. 2026-08-19 17:04 UTCEPSS rescore
  8. 2026-08-19 08:33 UTCGHSA enrichment
  9. 2026-08-18 19:22 UTCEG score recompute
  10. 2026-08-18 19:22 UTCGHSA enrichment
  11. 2026-08-18 13:48 UTCEPSS rescore
  12. 2026-08-18 06:15 UTCGHSA enrichment
  13. 2026-08-17 17:05 UTCEG score recompute
  14. 2026-08-17 17:05 UTCGHSA enrichment
  15. 2026-08-17 13:47 UTCEPSS rescore
  16. 2026-08-17 03:57 UTCEG score recompute
  17. 2026-08-17 03:57 UTCGHSA enrichment
  18. 2026-08-16 14:56 UTCEPSS rescore
  19. 2026-08-16 14:50 UTCEG score recompute
  20. 2026-08-16 14:50 UTCGHSA enrichment
  21. 2026-08-16 01:43 UTCGHSA enrichment
  22. 2026-08-15 12:36 UTCEG score recompute
  23. 2026-08-15 12:36 UTCGHSA enrichment
  24. 2026-08-15 01:30 UTCEPSS rescore
  25. 2026-08-14 23:29 UTCGHSA enrichment
Show 59 more
  1. 2026-08-14 10:22 UTCEG score recompute
  2. 2026-08-14 10:22 UTCGHSA enrichment
  3. 2026-08-13 22:00 UTCEPSS rescore
  4. 2026-08-13 21:14 UTCGHSA enrichment
  5. 2026-08-13 08:07 UTCGHSA enrichment
  6. 2026-08-12 18:59 UTCEG score recompute
  7. 2026-08-12 18:59 UTCGHSA enrichment
  8. 2026-08-12 13:51 UTCEPSS rescore
  9. 2026-08-12 05:52 UTCGHSA enrichment
  10. 2026-08-11 16:45 UTCEG score recompute
  11. 2026-08-11 16:45 UTCGHSA enrichment
  12. 2026-08-11 03:38 UTCEG score recompute
  13. 2026-08-11 03:38 UTCGHSA enrichment
  14. 2026-08-11 00:00 UTCEPSS rescore
  15. 2026-08-10 14:31 UTCGHSA enrichment
  16. 2026-08-10 12:53 UTCGHSA enrichment
  17. 2026-08-09 23:46 UTCEG score recompute
  18. 2026-08-09 23:46 UTCGHSA enrichment
  19. 2026-08-09 13:47 UTCEPSS rescore
  20. 2026-08-09 10:39 UTCGHSA enrichment
  21. 2026-08-08 21:32 UTCEG score recompute
  22. 2026-08-08 21:32 UTCGHSA enrichment
  23. 2026-08-08 16:37 UTCEPSS rescore
  24. 2026-08-08 08:24 UTCGHSA enrichment
  25. 2026-08-07 19:17 UTCEG score recompute
  26. 2026-08-07 19:17 UTCGHSA enrichment
  27. 2026-08-07 06:10 UTCGHSA enrichment
  28. 2026-08-06 17:03 UTCEG score recompute
  29. 2026-08-06 17:03 UTCGHSA enrichment
  30. 2026-08-06 13:47 UTCEPSS rescore
  31. 2026-08-06 03:55 UTCEG score recompute
  32. 2026-08-06 03:55 UTCGHSA enrichment
  33. 2026-08-05 19:17 UTCEPSS rescore
  34. 2026-08-05 19:17 UTCEPSS rescore
  35. 2026-08-05 14:48 UTCGHSA enrichment
  36. 2026-08-05 01:41 UTCEG score recompute
  37. 2026-08-05 01:41 UTCGHSA enrichment
  38. 2026-08-04 15:10 UTCEPSS rescore
  39. 2026-08-04 12:34 UTCEG score recompute
  40. 2026-08-04 12:34 UTCGHSA enrichment
  41. 2026-08-04 10:39 UTCEPSS rescore
  42. 2026-08-04 00:39 UTCGHSA enrichment
  43. 2026-08-03 11:31 UTCEG score recompute
  44. 2026-08-03 11:31 UTCGHSA enrichment
  45. 2026-08-03 10:36 UTCEPSS rescore
  46. 2026-08-02 22:19 UTCGHSA enrichment
  47. 2026-08-02 09:11 UTCEG score recompute
  48. 2026-08-02 09:11 UTCGHSA enrichment
  49. 2026-08-02 02:27 UTCEPSS rescore
  50. 2026-08-01 20:04 UTCGHSA enrichment
  51. 2026-08-01 06:56 UTCEG score recompute
  52. 2026-08-01 06:56 UTCGHSA enrichment
  53. 2026-07-31 17:34 UTCGHSA enrichment
  54. 2026-07-31 17:00 UTCEG score recompute▲ 8.10
  55. 2026-07-31 17:00 UTCGHSA enrichment
  56. 2026-07-31 16:58 UTCMITRE cvelistV5CVSS v3 → 8.1 · severity → HIGH
  57. 2026-07-31 11:24 UTCNVD update
  58. 2026-07-31 10:18 UTCEG score recompute
  59. 2026-07-31 10:18 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

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 in the National Vulnerability Database 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 1% probability of exploitation in the next 30 days, which ranks it in the top 57.8% of all 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?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-62391, 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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