Kibana 9.3.x < 9.3.3 SSRF (ESA-2026-40)

high Nessus Plugin ID 318722

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Synopsis

The remote host is affected by a server-side request forgery vulnerability.

Description

The version of Kibana installed on the remote host is 9.3.x prior to 9.3.3. It is, therefore, affected by a vulnerability as referenced in the ESA-2026-40 advisory.

- Server-Side Request Forgery (CWE-918) in Kibana can allow an authenticated user with connector management privileges to bypass the operator-configured connector allowlist, causing the Kibana server to issue outbound requests to destinations the egress controls were intended to block. (CVE-2026-49093)

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 9.3.3 or later.

Plugin Details

Severity: High

ID: 318722

File Name: kibana_esa_2026_40.nasl

Version: 1.4

Type: Remote

Family: CGI abuses

Published: 6/4/2026

Updated: 6/8/2026

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:C/I:N/A:N

CVSS Score Source: CVE-2026-49093

CVSS v3

Risk Factor: High

Base Score: 7.7

Temporal Score: 6.7

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/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: 5/28/2026

Vulnerability Publication Date: 5/28/2026

Reference Information

CVE: CVE-2026-49093

IAVB: 2026-B-0141, 2026-B-0142

Detections

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