CVE-2026-78606

MEDIUMPre-NVD 4.24.2—
EchelonGraph scoreHIGH confidence

Score 4.2 from GitHub Security Advisory published 2026-09-01. a secondary CVSS source baseline 4.2; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
4.2EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.2Exploit: None knownExposed: 0

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

Incorrect Authorization (CWE-863) in Kibana can lead to unauthorized disclosure, modification, and deletion of data via Accessing Functionality Not Properly Constrained by ACLs (CAPEC-1). Where two authenticated principals originating from different authentication realms share the same username value, one could read, modify, and delete the other's private Elastic AI Assistant Knowledge Base entries.

CVSS v3
4.2
EG Score
4.2(high)
EG Risk
19(Track)
EG Risk 19/100SSVC: 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
Severity42% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
13%
KEV
Not listed

Published

September 1, 2026

Last Modified

September 2, 2026

Advisory Details (1)

Auto-updated Sep 1, 2026
No patch confirmed yet.
generic

Kibana 8.19.21, 9.4.6, 9.5.2 Security Update (ESA-2026-142) - Security Announcements - Discuss the Elastic Stack

https://discuss.elastic.co/t/kibana-8-19-21-9-4-6-9-5-2-security-update-esa-2026-142/390093

Vendor Advisories for CVE-2026-78606(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 20× in last 7d / 64× 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. 2026-09-24 23:19 UTCEG score recompute
  2. 2026-09-24 23:19 UTCGHSA enrichment
  3. 2026-09-24 14:04 UTCEPSS rescore
  4. 2026-09-23 23:25 UTCEG score recompute
  5. 2026-09-23 23:25 UTCGHSA enrichment
  6. 2026-09-23 17:54 UTCEPSS rescore
  7. 2026-09-22 23:38 UTCEG score recompute
  8. 2026-09-22 23:38 UTCGHSA enrichment
  9. 2026-09-22 16:01 UTCEPSS rescore
  10. 2026-09-22 00:17 UTCEG score recompute
  11. 2026-09-22 00:17 UTCGHSA enrichment
  12. 2026-09-21 21:09 UTCEPSS rescore
  13. 2026-09-21 01:03 UTCEG score recompute
  14. 2026-09-21 01:03 UTCGHSA enrichment
  15. 2026-09-20 20:16 UTCEPSS rescore
  16. 2026-09-20 01:49 UTCEG score recompute
  17. 2026-09-20 01:49 UTCGHSA enrichment
  18. 2026-09-19 02:35 UTCEG score recompute
  19. 2026-09-19 02:35 UTCGHSA enrichment
  20. 2026-09-18 19:28 UTCEPSS rescore
  21. 2026-09-18 03:21 UTCEG score recompute
  22. 2026-09-18 03:21 UTCGHSA enrichment
  23. 2026-09-17 04:07 UTCEG score recompute
  24. 2026-09-17 04:07 UTCGHSA enrichment
  25. 2026-09-16 14:08 UTCEPSS rescore
Show 39 more
  1. 2026-09-16 05:15 UTCEPSS rescore
  2. 2026-09-16 04:53 UTCGHSA enrichment
  3. 2026-09-15 05:39 UTCEG score recompute
  4. 2026-09-15 05:39 UTCGHSA enrichment
  5. 2026-09-15 03:12 UTCEPSS rescore
  6. 2026-09-15 03:12 UTCEPSS rescore
  7. 2026-09-14 06:25 UTCEG score recompute
  8. 2026-09-14 06:25 UTCGHSA enrichment
  9. 2026-09-13 07:11 UTCGHSA enrichment
  10. 2026-09-12 07:58 UTCEG score recompute
  11. 2026-09-12 07:58 UTCGHSA enrichment
  12. 2026-09-11 14:53 UTCEPSS rescore
  13. 2026-09-11 14:53 UTCEPSS rescore
  14. 2026-09-11 08:44 UTCEG score recompute
  15. 2026-09-11 08:44 UTCGHSA enrichment
  16. 2026-09-10 09:30 UTCGHSA enrichment
  17. 2026-09-09 10:14 UTCEG score recompute
  18. 2026-09-09 10:14 UTCGHSA enrichment
  19. 2026-09-08 22:01 UTCEPSS rescore
  20. 2026-09-08 11:00 UTCEG score recompute
  21. 2026-09-08 11:00 UTCGHSA enrichment
  22. 2026-09-07 11:25 UTCEG score recompute
  23. 2026-09-07 11:25 UTCGHSA enrichment
  24. 2026-09-06 13:48 UTCEPSS rescore
  25. 2026-09-06 12:10 UTCEG score recompute
  26. 2026-09-06 12:10 UTCGHSA enrichment
  27. 2026-09-05 12:54 UTCEG score recompute
  28. 2026-09-05 12:54 UTCGHSA enrichment
  29. 2026-09-04 13:39 UTCEG score recompute
  30. 2026-09-04 13:39 UTCGHSA enrichment
  31. 2026-09-04 05:07 UTCEPSS rescore
  32. 2026-09-03 14:25 UTCGHSA enrichment
  33. 2026-09-02 15:07 UTCEG score recompute
  34. 2026-09-02 15:07 UTCGHSA enrichment
  35. 2026-09-02 14:12 UTCEPSS rescore
  36. 2026-09-01 20:20 UTCEG score recompute
  37. 2026-09-01 19:45 UTCEG score recompute
  38. 2026-09-01 19:25 UTCEG score recompute
  39. 2026-09-01 19:22 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-78606?
CVE-2026-78606 is a medium vulnerability published on September 1, 2026. Incorrect Authorization (CWE-863) in Kibana can lead to unauthorized disclosure, modification, and deletion of data via Accessing Functionality Not Properly Constrained by ACLs (CAPEC-1). Where two authenticated principals originating from different authentication realms share the same username…
When was CVE-2026-78606 disclosed?
CVE-2026-78606 was first published in the National Vulnerability Database on September 1, 2026, with the most recent update on September 2, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-78606 actively exploited?
CVE-2026-78606 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 87.4% of all scored CVEs.
What is the CVSS score of CVE-2026-78606?
CVE-2026-78606 has a CVSS v3 base score of 4.2 (NVD).
How do I remediate CVE-2026-78606?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-78606, 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

Explore the affected products and dependency analysis for CVE-2026-78606

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