Kibana 8.9.x < 8.19.19 / 9.x < 9.4.5 Missing Authorization (ESA-2026-86)

high Nessus Plugin ID 338732

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Synopsis

The remote host is affected by a missing authorization vulnerability.

Description

The version of Kibana installed on the remote host is 8.9.x prior to 8.19.19, or 9.x prior to 9.4.5. It is, therefore, affected by a vulnerability as referenced in the ESA-2026-86 advisory.

- The state that Kibana stores for an Observability Onboarding flow is not bound to the user who created the flow, and the routes that read and update that state do not verify ownership. An authenticated user who holds only generic read access to the space can therefore discover the onboarding flows of other users, read their onboarding state, and write arbitrary progress data into them. A tampered flow can also cause the owner's onboarding view to fail with a server error. (CVE-2026-72669)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update to Kibana version 8.19.19, 9.4.5 or later.

Plugin Details

Severity: High

ID: 338732

File Name: kibana_esa_2026_86.nasl

Version: 1.1

Type: Remote

Family: CGI abuses

Published: 8/21/2026

Updated: 8/21/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.9

Percentile: 52.67

CVSS v2

Risk Factor: High

Base Score: 8

Vector: CVSS2#AV:N/AC:L/Au:S/C:P/I:C/A:P

CVSS Score Source: CVE-2026-72669

CVSS v3

Risk Factor: High

Base Score: 7.6

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L

Vulnerability Information

CPE: cpe:/a:elasticsearch:kibana

Required KB Items: installed_sw/Kibana

Patch Publication Date: 8/13/2026

Vulnerability Publication Date: 8/13/2026

Reference Information

CVE: CVE-2026-72669

CWE: 862

IAVB: 2026-B-0232

Detections

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