Kibana 9.4.x < 9.4.3 Multiple Vulnerabilities (ESA-2026-54 / ESA-2026-58)

medium Nessus Plugin ID 330369

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Synopsis

The remote host is affected by multiple vulnerabilities.

Description

The version of Kibana installed on the remote host is 9.4.x prior to 9.4.3. It is, therefore, affected by multiple vulnerabilities as referenced in the ESA-2026-54 and ESA-2026-58 advisories.

- Improper Access Control (CWE-284) in Kibana can lead to unauthorized modification of Entity Analytics Watchlist configuration and potential information disclosure. A low-privileged authenticated user with read-only Security Solution access could perform write operations on watchlist data that should require elevated privileges. Under specific deployment conditions, this could also allow such a user to access data beyond their authorized scope. (CVE-2026-56146)

- Unintended Proxy or Intermediary ('Confused Deputy') (CWE-441) in Kibana can lead to unauthorized information exposure via Accessing Functionality Not Properly Constrained by ACLs (CAPEC-1). Under certain conditions, a lower-privileged user can cause data from sources they are not authorized to access to be processed using another user's privileges. (CVE-2026-49092)

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

Solution

Update to Kibana version 9.4.3 or later.

Plugin Details

Severity: Medium

ID: 330369

File Name: kibana_esa_2026_54.nasl

Version: 1.2

Type: Remote

Family: CGI abuses

Published: 7/28/2026

Updated: 7/29/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 2.1

Percentile: 7.86

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-2026-56146

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: 7/21/2026

Vulnerability Publication Date: 7/21/2026

Reference Information

CVE: CVE-2026-49092, CVE-2026-56146

IAVB: 2026-B-0199

Detections

Analytics