Kibana 8.x < 8.19.17 / 9.0.x < 9.3.6 / 9.4.x < 9.4.3 Path Traversal (ESA-2026-159)

medium Nessus Plugin ID 344301

Synopsis

The remote host is affected by a path traversal vulnerability.

Description

The version of Kibana installed on the remote host is 8.x prior to 8.19.17, or 9.0.x prior to 9.3.6, or 9.4.x prior to 9.4.3. It is, therefore, affected by a vulnerability as referenced in the ESA-2026-159 advisory.

- Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (CWE-22) in Kibana can lead to the unauthorized deletion of resources via Path Traversal (CAPEC-126). A low-privileged user could cause a subsequent action taken by a higher-privileged user in the Fleet administration interface to act on an unintended target, resulting in the deletion of resources including accounts with elevated privileges.
(CVE-2026-78591)

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 8.19.17, 9.3.6, 9.4.3 or later.

Plugin Details

Severity: Medium

ID: 344301

File Name: kibana_esa_2026_159.nasl

Version: 1.1

Type: Remote

Family: CGI abuses

Published: 9/9/2026

Updated: 9/9/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.5

Percentile: 51.57

CVSS v2

Risk Factor: High

Base Score: 7.5

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

CVSS Score Source: CVE-2026-78591

CVSS v3

Risk Factor: Medium

Base Score: 6.3

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

Vulnerability Information

CPE: cpe:/a:elasticsearch:kibana

Required KB Items: installed_sw/Kibana

Patch Publication Date: 9/1/2026

Vulnerability Publication Date: 9/1/2026

Reference Information

CVE: CVE-2026-78591

IAVB: 2026-B-0244

Detections

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