Kibana 8.5.x < 8.19.20 / 9.x < 9.4.5 Missing Authorization (ESA-2026-96)

high Nessus Plugin ID 338729

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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 8.5.x prior to 8.19.20, or 9.x prior to 9.4.5. It is, therefore, affected by a vulnerability as referenced in the ESA-2026-96 advisory.

- Missing Authorization (CWE-862) in Kibana can lead to unauthorized execution of Osquery and Elastic Defend response actions on managed hosts via Accessing Functionality Not Properly Constrained by ACLs (CAPEC-1). A Kibana user who is able to author and evaluate Elastic Security detection rules can cause response actions to be carried out against enrolled agents without holding the Osquery live query privileges or the Elastic Defend response action privileges that normally govern those capabilities. Depending on the response action involved, this can result in disclosure of information from the affected hosts or in unauthorized changes to their state. (CVE-2026-72665)

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 8.19.20, 9.4.5 or later.

Plugin Details

Severity: High

ID: 338729

File Name: kibana_esa_2026_96.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: Medium

Score: 4.3

Percentile: 53.58

CVSS v2

Risk Factor: High

Base Score: 8.5

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

CVSS Score Source: CVE-2026-72665

CVSS v3

Risk Factor: High

Base Score: 8.1

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

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-2026-72665

CWE: 862

IAVB: 2026-B-0232

Detections

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