Kibana 8.x < 8.19.19 / 9.0.x < 9.3.8 / 9.4.x < 9.4.4 Multiple Vulnerabilities (ESA-2026-66 / ESA-2026-69 / ESA-2026-71 / ESA-2026-72)

medium Nessus Plugin ID 330365

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Synopsis

The remote host is affected by multiple vulnerabilities.

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 multiple vulnerabilities as referenced in the ESA-2026-66, ESA-2026-69, ESA-2026-71, and ESA-2026-72 advisories.

- Uncontrolled Resource Consumption (CWE-400) in Kibana can lead to denial of service via Excessive Allocation (CAPEC-130). An authenticated attacker with low-privilege access can trigger a denial of service condition in Kibana by sending a specially crafted, oversized request payload. Processing this user-supplied input requires resource-intensive memory allocation that can exhaust the available heap memory in the Kibana process, causing it to crash and become unavailable to all users. (CVE-2026-63260)

- Uncontrolled Resource Consumption (CWE-400) in Kibana can lead to denial of service via Excessive Allocation (CAPEC-130). A low-privileged authenticated user can send a specially crafted request to a Kibana machine learning feature, causing the server to exhaust available memory and become unavailable to all users. (CVE-2026-63261)

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 8.19.19, 9.3.8, 9.4.4 or later.

Plugin Details

Severity: Medium

ID: 330365

File Name: kibana_esa_2026_63.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: 3

Percentile: 23.75

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2026-63260

CVSS v3

Risk Factor: Medium

Base Score: 5

Temporal Score: 4.4

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

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

CVSS Score Source: CVE-2026-63142

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-2026-63142, CVE-2026-63145, CVE-2026-63260, CVE-2026-63261

IAVB: 2026-B-0199

Detections

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