CVE-2026-78586

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreHIGH confidence

Score 6.5 from GitHub Security Advisory published 2026-09-02. a secondary CVSS source baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.5Exploit: None knownExposed: 0

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

Allocation of Resources Without Limits or Throttling (CWE-770) in Kibana can lead to a denial of service via Excessive Allocation (CAPEC-130). An authenticated user with low-level privileges could submit a specially crafted request that causes Kibana to consume an unbounded amount of memory, rendering it unavailable to all users.

CVSS v3
6.5
EG Score
6.5(high)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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
Severity65% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
27%
KEV
Not listed

Published

September 2, 2026

Last Modified

September 3, 2026

Advisory Details (1)

Auto-updated Sep 2, 2026
No patch confirmed yet.
generic

Kibana 8.19.16, 9.3.5, 9.4.2 Security Update (ESA-2026-163) - Security Announcements - Discuss the Elastic Stack

https://discuss.elastic.co/t/kibana-8-19-16-9-3-5-9-4-2-security-update-esa-2026-163/390116

Vendor Advisories for CVE-2026-78586(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 21× in last 7d / 54× 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. 2026-09-20 20:16 UTCEPSS rescore
  2. 2026-09-20 20:03 UTCGHSA enrichment
  3. 2026-09-19 22:22 UTCEG score recompute
  4. 2026-09-19 22:22 UTCGHSA enrichment
  5. 2026-09-19 00:39 UTCEG score recompute
  6. 2026-09-19 00:39 UTCGHSA enrichment
  7. 2026-09-18 19:28 UTCEPSS rescore
  8. 2026-09-18 02:58 UTCEG score recompute
  9. 2026-09-18 02:58 UTCGHSA enrichment
  10. 2026-09-17 05:17 UTCEG score recompute
  11. 2026-09-17 05:17 UTCGHSA enrichment
  12. 2026-09-16 14:08 UTCEPSS rescore
  13. 2026-09-16 07:36 UTCEG score recompute
  14. 2026-09-16 07:36 UTCGHSA enrichment
  15. 2026-09-16 05:15 UTCEPSS rescore
  16. 2026-09-15 09:55 UTCEG score recompute
  17. 2026-09-15 09:55 UTCGHSA enrichment
  18. 2026-09-15 03:12 UTCEPSS rescore
  19. 2026-09-15 03:12 UTCEPSS rescore
  20. 2026-09-14 12:14 UTCEG score recompute
  21. 2026-09-14 12:14 UTCGHSA enrichment
  22. 2026-09-13 14:32 UTCGHSA enrichment
  23. 2026-09-12 16:51 UTCEG score recompute
  24. 2026-09-12 16:51 UTCGHSA enrichment
  25. 2026-09-11 19:10 UTCEG score recompute
Show 29 more
  1. 2026-09-11 19:10 UTCGHSA enrichment
  2. 2026-09-11 14:53 UTCEPSS rescore
  3. 2026-09-11 14:53 UTCEPSS rescore
  4. 2026-09-10 21:13 UTCEG score recompute
  5. 2026-09-10 21:13 UTCGHSA enrichment
  6. 2026-09-09 23:32 UTCGHSA enrichment
  7. 2026-09-09 00:23 UTCEG score recompute
  8. 2026-09-09 00:23 UTCGHSA enrichment
  9. 2026-09-08 22:01 UTCEPSS rescore
  10. 2026-09-08 02:17 UTCEG score recompute
  11. 2026-09-08 02:17 UTCGHSA enrichment
  12. 2026-09-07 04:36 UTCEG score recompute
  13. 2026-09-07 04:36 UTCGHSA enrichment
  14. 2026-09-06 13:48 UTCEPSS rescore
  15. 2026-09-06 06:54 UTCEG score recompute
  16. 2026-09-06 06:54 UTCGHSA enrichment
  17. 2026-09-05 09:13 UTCEG score recompute
  18. 2026-09-05 09:13 UTCGHSA enrichment
  19. 2026-09-04 11:32 UTCEG score recompute
  20. 2026-09-04 11:32 UTCGHSA enrichment
  21. 2026-09-04 05:07 UTCEPSS rescore
  22. 2026-09-03 13:50 UTCGHSA enrichment
  23. 2026-09-02 19:32 UTCEG score recompute
  24. 2026-09-02 19:32 UTCGHSA enrichment
  25. 2026-09-02 16:20 UTCEG score recompute
  26. 2026-09-02 16:19 UTCGHSA enrichment
  27. 2026-09-02 15:31 UTCEG score recompute
  28. 2026-09-02 14:52 UTCEG score recompute
  29. 2026-09-02 14:51 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-78586?
CVE-2026-78586 is a medium vulnerability published on September 2, 2026. Allocation of Resources Without Limits or Throttling (CWE-770) in Kibana can lead to a denial of service via Excessive Allocation (CAPEC-130). An authenticated user with low-level privileges could submit a specially crafted request that causes Kibana to consume an unbounded amount of memory,…
When was CVE-2026-78586 disclosed?
CVE-2026-78586 was first published in the National Vulnerability Database on September 2, 2026, with the most recent update on September 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-78586 actively exploited?
CVE-2026-78586 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 73.4% of all scored CVEs.
What is the CVSS score of CVE-2026-78586?
CVE-2026-78586 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-78586?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-78586, 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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