Detections
Analytics

Kibana 8.x < 8.16.3 / 8.17.x < 8.17.2 Authorization Bypass (ESA-2026-51)

medium Nessus Plugin ID 326283

Synopsis

The remote host is affected by an authorization bypass vulnerability.

Description

The version of Kibana installed on the remote host is 8.x prior to 8.16.3 or 8.17.x prior to 8.17.2. It is, therefore, affected by an authorization bypass vulnerability:

 - Authorization Bypass Through User-Controlled Key (CWE-639) in Kibana can lead to unauthorized data modification.
 Under certain conditions, an authenticated user could reference another user's AI Assistant conversation identifier to access or modify a conversation they do not own. Successful exploitation requires knowledge of a hard-to-guess identifier. (CVE-2026-49089)

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 8.16.3, 8.17.2, or later.

See Also

http://www.nessus.org/u?5041d9bb

Plugin Details

Severity: Medium

ID: 326283

File Name: kibana_esa_2026_51.nasl

Version: 1.1

Type: Remote

Family: CGI abuses

Published: 7/10/2026

Updated: 7/10/2026

Supported Sensors: Nessus

Risk Information

CVSS v2

Risk Factor: Low

Base Score: 3.6

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

CVSS Score Source: CVE-2026-49089

CVSS v3

Risk Factor: Medium

Base Score: 4.2

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

Vulnerability Information

CPE: cpe:/a:elasticsearch:kibana

Required KB Items: installed_sw/Kibana

Patch Publication Date: 7/1/2026

Vulnerability Publication Date: 7/1/2026

Reference Information

CVE: CVE-2026-49089

IAVB: 2026-B-0187