Detections
Analytics

Kibana 8.x < 8.19.13 / 9.x < 9.2.7 / 9.3.x < 9.3.2 DoS (ESA-2026-20)

medium Nessus Plugin ID 303586

Synopsis

The remote host is missing a security update.

Description

The version of Kibana installed on the remote host is prior to 8.19.13, 9.2.7, or 9.3.2. It is, therefore, affected by a vulnerability as referenced in the ESA-2026-20 advisory.

 - Improper Validation of Specified Quantity in Input (CWE-1284) in the Timelion visualization plugin in Kibana can lead Denial of Service via Excessive Allocation (CAPEC-130). The vulnerability allows an authenticated user to send a specially crafted Timelion expression that overwrites internal series data properties with an excessively large quantity value. (CVE-2026-26940)

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 8.19.13, 9.2.7, 9.3.2 or later.

See Also

http://www.nessus.org/u?15c6eaa6

Plugin Details

Severity: Medium

ID: 303586

File Name: kibana_esa_2026_20.nasl

Version: 1.2

Type: remote

Family: CGI abuses

Published: 3/25/2026

Updated: 3/26/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

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-2026-26940

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

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

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: 3/19/2026

Vulnerability Publication Date: 3/19/2026

Reference Information

CVE: CVE-2026-26940