Kibana 8.x < 8.19.18 / 9.x < 9.4.3 Path Traversal (ESA-2026-157)

medium Nessus Plugin ID 344306

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 8.19.18, or 9.x prior to 9.4.3. It is, therefore, affected by a vulnerability as referenced in the ESA-2026-157 advisory.

- Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (CWE-22) in the Kibana Fleet feature can lead to the unauthorized deletion of internal resources via Path Traversal (CAPEC-126). A low-privileged user holding Fleet write access could cause a subsequent administrative delete action to act on unintended internal resources. Exploitation requires an administrator to interact with the affected Fleet interface. (CVE-2026-78599)

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 8.19.18, 9.4.3 or later.

Plugin Details

Severity: Medium

ID: 344306

File Name: kibana_esa_2026_157.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

Percentile: 23.63

CVSS v2

Risk Factor: Medium

Base Score: 6.8

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

CVSS Score Source: CVE-2026-78599

CVSS v3

Risk Factor: Medium

Base Score: 6.5

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

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-2026-78599

IAVB: 2026-B-0244

Detections

Analytics