Kibana 8.x < 8.19.19 / 9.0.x < 9.3.8 / 9.4.x < 9.4.4 Incorrect Authorization (ESA-2026-156)

medium Nessus Plugin ID 344310

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Synopsis

The remote host is affected by an incorrect authorization vulnerability.

Description

The version of Kibana installed on the remote host is 8.x prior to 8.19.19, or 9.0.x prior to 9.3.8, or 9.4.x prior to 9.4.4. It is, therefore, affected by a vulnerability as referenced in the ESA-2026-156 advisory.

- Incorrect Authorization (CWE-863) in the Kibana machine learning feature can lead to information disclosure via Exploiting Incorrectly Configured Access Control Security Levels (CAPEC-180). An authenticated user holding machine learning job management privileges within a single Kibana space could cause a job's saved object to become accessible across all spaces in the Kibana instance, without holding access rights to those additional spaces. (CVE-2026-78598)

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, 9.3.8, 9.4.4 or later.

Plugin Details

Severity: Medium

ID: 344310

File Name: kibana_esa_2026_156.nasl

Version: 1.2

Type: Remote

Family: CGI abuses

Published: 9/9/2026

Updated: 9/10/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 2.1

Percentile: 7.97

CVSS v2

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.1

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

CVSS Score Source: CVE-2026-78598

CVSS v3

Risk Factor: Medium

Base Score: 5.4

Temporal Score: 4.7

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

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:elasticsearch:kibana

Required KB Items: installed_sw/Kibana

Exploit Ease: No known exploits are available

Patch Publication Date: 9/1/2026

Vulnerability Publication Date: 9/1/2026

Reference Information

CVE: CVE-2026-78598

IAVB: 2026-B-0244

Detections

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