CVE-2026-102406

HIGHPre-NVD 8.88.8
EchelonGraph scoreHIGH confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-10-06. A secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Trending — 3 sources updated this week

Also known asEUVD-2026-93927 (ENISA EUVD) · GHSA-gpr2-2mpc-hvf2 (GitHub Security Advisories)Source: ENISA EUVD

8.8EG
EchelonGraph verdictPlan mitigationNo fix is confirmed yet: check the vendor's advisory for a fixed release; until one is applied, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 8.8Exploit: None knownExposed services: Not assessed

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

The CVE record's CNA (Elastic) lists Elastic Kibana versions 8.14.0 up to and including 8.19.21, 9.0.0 up to and including 9.4.6 and 9.5.0 up to and including 9.5.3 as affected. No release containing a fix is confirmed on record.

Authorization Bypass Through User-Controlled Key (CWE-639) in Kibana could lead to cross-tenant data interception. In this context, "tenant" refers to a user or team sharing the same Kibana deployment, not a separate Elastic Cloud organization or customer. Kibana's Fleet package installation process allowed a user holding delegated Fleet package-management privileges, without direct Elasticsearch administrative privileges, to claim a data stream identifier already in use by another tenant. Because ownership of that identifier was not verified before Fleet applied the uploaded package's generated index and ingest-pipeline settings to already-existing infrastructure, an attacker could redirect an existing tenant's data stream through infrastructure under their control. This exposed the affected tenant's subsequently ingested data to unauthorized disclosure and modification, and prevented that data from reaching its intended destination. Interception could continue even after the malicious package was removed, requiring separate remediation of the affected infrastructure.

CVSS v3
8.8
EG Score
8.8HIGHhigh confidence
EG Risk
40
EG Risk 40/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity88% × 45%
Impact severity (EG Severity): CVSS 8.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.4% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: No fix is confirmed yet. Check the vendor's advisory for a fixed release; until one is applied, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule.
EPSS PROB
0.3%
EPSS %ILE
28th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (8.8): severity, escalated by confirmed exploitation. This CVE's 8.8 is its impact severity (EG Severity), not escalated.

EG Severity
8.8 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.3% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-28). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Track* at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says. In the directive's words, “Fix on system upgrade” means that, “unless conditions change”, the vulnerability “should be remediated the next time the vulnerable asset receives a scheduled major upgrade or rebuild”: its timelines are “dynamic as facts change”, and a KEV listing shortens them.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

No fix is confirmed yet. Check the vendor's advisory for a fixed release; until one is applied, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says. In the directive's words, “Fix on system upgrade” means that, “unless conditions change”, the vulnerability “should be remediated the next time the vulnerable asset receives a scheduled major upgrade or rebuild”: its timelines are “dynamic as facts change”, and a KEV listing shortens them.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

October 6, 2026

Last Modified

October 13, 2026

Advisory Details (1)

Auto-updated Oct 6, 2026
No fix on record yet.
Web page

Kibana 8.19.22, 9.4.7, 9.5.4 Security Update (ESA-2026-187) - Security Announcements - Discuss the Elastic Stack

https://discuss.elastic.co/t/kibana-8-19-22-9-4-7-9-5-4-security-update-esa-2026-187/390860

Vendor Advisories for CVE-2026-102406(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 9× in last 7d / 63× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

  1. 2026-11-02 16:43 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  2. 2026-11-01 16:33 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  3. 2026-10-31 16:31 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  4. 2026-10-30 16:33 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  5. 2026-10-29 16:32 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  6. 2026-10-28 23:59 UTCEG score recompute
  7. 2026-10-28 23:59 UTCGHSA enrichmentGHSA-gpr2-2mpc-hvf2 · GitHub severity HIGH · GitHub CVSS 8.8
  8. 2026-10-28 16:31 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  9. 2026-10-27 16:31 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  10. 2026-10-26 16:30 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  11. 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  12. 2026-10-25 14:56 UTCEG score recompute
  13. 2026-10-24 16:31 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  14. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  15. 2026-10-22 16:33 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  16. 2026-10-21 16:31 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  17. 2026-10-21 06:36 UTCEG score recompute
  18. 2026-10-21 06:36 UTCGHSA enrichmentGHSA-gpr2-2mpc-hvf2 · GitHub severity HIGH · GitHub CVSS 8.8
  19. 2026-10-20 16:31 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  20. 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  21. 2026-10-18 16:31 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  22. 2026-10-18 05:10 UTCEG score recompute
  23. 2026-10-17 16:33 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  24. 2026-10-16 16:40 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  25. 2026-10-15 16:31 UTCEPSS rescoreEPSS 0.3% · 25th percentile
Show 38 more
  1. 2026-10-14 16:31 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  2. 2026-10-13 19:08 UTCEG score recompute
  3. 2026-10-13 19:08 UTCGHSA enrichmentGHSA-gpr2-2mpc-hvf2 · GitHub severity HIGH · GitHub CVSS 8.8
  4. 2026-10-13 16:33 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  5. 2026-10-12 16:41 UTCEG score recompute
  6. 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  7. 2026-10-12 01:57 UTCGHSA enrichmentGHSA-gpr2-2mpc-hvf2 · GitHub severity HIGH · GitHub CVSS 8.8
  8. 2026-10-11 20:16 UTCEG score recompute
  9. 2026-10-11 18:28 UTCEG score recompute
  10. 2026-10-11 14:15 UTCEG score recompute
  11. 2026-10-11 14:15 UTCGHSA enrichmentGHSA-gpr2-2mpc-hvf2 · GitHub severity HIGH · GitHub CVSS 8.8
  12. 2026-10-11 13:47 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  13. 2026-10-11 02:34 UTCEG score recompute
  14. 2026-10-11 02:34 UTCGHSA enrichmentGHSA-gpr2-2mpc-hvf2 · GitHub severity HIGH · GitHub CVSS 8.8
  15. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  16. 2026-10-10 14:52 UTCGHSA enrichmentGHSA-gpr2-2mpc-hvf2 · GitHub severity HIGH · GitHub CVSS 8.8
  17. 2026-10-10 03:12 UTCEG score recompute
  18. 2026-10-10 03:11 UTCGHSA enrichmentGHSA-gpr2-2mpc-hvf2 · GitHub severity HIGH · GitHub CVSS 8.8
  19. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  20. 2026-10-09 15:31 UTCGHSA enrichmentGHSA-gpr2-2mpc-hvf2 · GitHub severity HIGH · GitHub CVSS 8.8
  21. 2026-10-09 03:50 UTCEG score recompute
  22. 2026-10-09 03:50 UTCGHSA enrichmentGHSA-gpr2-2mpc-hvf2 · GitHub severity HIGH · GitHub CVSS 8.8
  23. 2026-10-08 17:11 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  24. 2026-10-08 16:09 UTCGHSA enrichmentGHSA-gpr2-2mpc-hvf2 · GitHub severity HIGH · GitHub CVSS 8.8
  25. 2026-10-08 04:25 UTCEG score recompute
  26. 2026-10-08 04:25 UTCGHSA enrichmentGHSA-gpr2-2mpc-hvf2 · GitHub severity HIGH · GitHub CVSS 8.8
  27. 2026-10-08 04:09 UTCEG score recompute
  28. 2026-10-08 04:09 UTCGHSA enrichmentGHSA-gpr2-2mpc-hvf2 · GitHub severity HIGH · GitHub CVSS 8.8
  29. 2026-10-08 01:33 UTCEG score recompute
  30. 2026-10-08 01:33 UTCGHSA enrichmentGHSA-gpr2-2mpc-hvf2 · GitHub severity HIGH · GitHub CVSS 8.8
  31. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  32. 2026-10-07 13:50 UTCGHSA enrichmentGHSA-gpr2-2mpc-hvf2 · GitHub severity HIGH · GitHub CVSS 8.8
  33. 2026-10-07 08:13 UTCEG score recompute
  34. 2026-10-07 08:13 UTCGHSA enrichmentGHSA-gpr2-2mpc-hvf2 · GitHub severity HIGH · GitHub CVSS 8.8
  35. 2026-10-06 20:32 UTCEG score recompute
  36. 2026-10-06 20:02 UTCEG score recompute
  37. 2026-10-06 19:42 UTCEG score recomputeFirst assessed: 8.8 HIGH
  38. 2026-10-06 19:41 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-102406?
CVE-2026-102406 is a high-severity vulnerability; its CVE record was published on October 6, 2026. Authorization Bypass Through User-Controlled Key (CWE-639) in Kibana could lead to cross-tenant data interception. In this context, "tenant" refers to a user or team sharing the same Kibana deployment, not a separate Elastic Cloud organization or customer. Kibana's Fleet package installation…
When was the CVE record for CVE-2026-102406 published?
The CVE record for CVE-2026-102406 was published on October 6, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of October 13, 2026; the record at its source may have been updated since.
Is CVE-2026-102406 actively exploited?
CVE-2026-102406 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (28th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-102406?
CVE-2026-102406 has a CVSS base score of 8.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-102406?
No fix for CVE-2026-102406 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The CVE record's CNA (Elastic) lists Elastic Kibana versions 8.14.0 up to and including 8.19.21, 9.0.0 up to and including 9.4.6 and 9.5.0 up to and including 9.5.3 as affected. No release containing a fix is confirmed on record. The vendor advisories EchelonGraph has for CVE-2026-102406 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-102406

Explore →

Is Your Infrastructure Affected by CVE-2026-102406?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.