CVE-2026-78606

mediumpriority · track · 0OT risk · elevatedEPSS 0.002 · 14 %ileDEUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.23% (14th) EPSS

CVSS 4.2 · medium

Is it mine?

6 products

Check your exposure

Who says so?

2 sources

cert_bund · nvd

EPSS · scored 2026-10-27

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

Technical severity, 0–10. One row per scoring source.

4.2

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 3.9–4.2

v3.14.2mediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:Nsecondary · security@elastic.coexploitability 1.6 · impact 2.5

v3.13.9lowCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-863US

affected products (6)

Products and version ranges known to be affected.

Open Source Kibana< 8.19.21cert_bundDE
Open Source Kibana< 9.4.6cert_bundDE
Open Source Kibana< 9.5.2cert_bundDE
elastic kibana8.19.11 → 8.19.21nvdUScpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:*
elastic kibana9.3.0 → 9.4.6nvdUScpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:*
elastic kibana9.5.0 → 9.5.2nvdUScpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-3145Kibana: Mehrere SchwachstellenDeutsch2026-09-01csaf · cert_bundDE
Ein entfernter, authentisierter Angreifer kann mehrere Schwachstellen in Kibana ausnutzen, um seine Privilegien zu erhöhen, Sicherheitsmaßnahmen zu umgehen, Daten zu manipulieren oder offenzulegen oder einen Denial-of-Service-Zustand auszulösen.

sources

Which sources assert this record, and when.

cert_bund nvd NVD CVE.org MITRE

published 2026-09-01modified 2026-09-02

references (1) nvd

External citations — patches, advisories, analysis.

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

scry

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