# Kibana 8.19.22, 9.4.6 Security Update (ESA-2026-103)

**URL:** https://discuss.elastic.co/t/kibana-8-19-22-9-4-6-security-update-esa-2026-103/390679
**Category:** Security Announcements
**Created:** [September 25, 2026, 8:32am UTC](https://discuss.elastic.co/t/kibana-8-19-22-9-4-6-security-update-esa-2026-103/390679 "2026-09-25T08:32:22Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![kruskall](https://avatars.discourse-cdn.com/v4/letter/k/ac91a4/32.png) [@kruskall](https://discuss.elastic.co/u/kruskall)
#### Post date: [September 25, 2026, 8:32am UTC](https://discuss.elastic.co/t/kibana-8-19-22-9-4-6-security-update-esa-2026-103/390679/1 "2026-09-25T08:32:22Z")

</div>

**Authorization Bypass Through User-Controlled Key in Kibana Leading to Unauthorized Disclosure, Modification, and Deletion of Data**

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.

**Affected Versions:**

- 8.x: All versions from 8.0.0 up to and including 8.19.21
- 9.x: All versions from 9.4.0 up to and including 9.4.5

**Affected Configurations:**  
Kibana deployments that use the Security Solution Timeline feature.

**Solutions and Mitigations:**

The issue is resolved in Kibana version 8.19.22, 9.4.6.

**For Users that Cannot Upgrade:**

There are no workarounds

**Indicators of Compromise (IOC)**

A draft Timeline object whose creating user and last-updating user are distinct accounts indicates that a user other than the owner changed the object.

**Elastic Cloud Serverless**

Due to our continuous deployment and patching model, the vulnerability described in this security advisory was remediated in our Elastic Cloud Serverless offering before the public disclosure.

**Severity:** CVSSv3.1: Medium ( 6.3 ) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L  
**CVE ID:** CVE-2026-72662  
**Problem Type:** CWE-639 - Authorization Bypass Through User-Controlled Key  
**Impact:** CAPEC-1 - Accessing Functionality Not Properly Constrained by ACLs