---
id: CVE-2026-72662
title: >-
  Authorization Bypass Through User-Controlled Key (CWE-639) in Kibana can lead
  to unauthorized disclosure, modification, and deletion of data via Accessing
  Functionality Not Properly Constrained by ACLs (CAPEC-1)
summary: >-
  Authorization Bypass Through User-Controlled Key (CWE-639) in Kibana can lead
  to unauthorized disclosure, modification, and deletion of data via Accessing
  Functionality Not Properly Constrained by ACLs (CAPEC-1). An authenticated
  user gr…
severity: medium
cvss: 6.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L'
cwe:
  - CWE-639
vendor: Elastic
product: Kibana
affected:
  - Kibana >= 8.0.0 <= 8.19.21
  - Kibana >= 9.4.0 <= 9.4.5
published: '2026-09-26'
updated: '2026-09-26'
sourceUpdated: '2026-09-26T23:16:35.093'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-72662'
references:
  - url: >-
      https://discuss.elastic.co/t/kibana-8-19-22-9-4-6-security-update-esa-2026-103/390679
    label: security@elastic.co
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-26T23:01:25.142449Z'
ingestedAt: '2026-09-26T21:38:01.501Z'
---

## Overview

Authorization Bypass Through User-Controlled Key (CWE-639) in Kibana can lead to unauthorized disclosure, modification, and deletion of data via Accessing Functionality Not Properly Constrained by ACLs (CAPEC-1). An authenticated user granted the Timeline feature privilege in a Kibana space could enumerate, read, modify, and delete draft Timeline objects belonging to other users in the same space. Read access is sufficient for enumeration and disclosure; the Timeline write privilege is required for modification and deletion.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.