# Kibana 8.19.20, and 9.4.5 Security Update (ESA-2026-95)

**URL:** <https://discuss.elastic.co/t/kibana-8-19-20-and-9-4-5-security-update-esa-2026-95/389527>\
**Category:** Security Announcements\
**Created:** [August 13, 2026, 10:48am UTC](https://discuss.elastic.co/t/kibana-8-19-20-and-9-4-5-security-update-esa-2026-95/389527 "2026-08-13T10:48:30Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![ikakavas](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/ikakavas/32/34430_2.png) [@ikakavas](https://discuss.elastic.co/u/ikakavas)\
**Post date:** [August 13, 2026, 10:48am UTC](https://discuss.elastic.co/t/kibana-8-19-20-and-9-4-5-security-update-esa-2026-95/389527/1 "2026-08-13T10:48:31Z")

</div>

**Missing Authorization in Kibana Leading to Unauthorized Execution of Endpoint Response Actions**

Missing Authorization (CWE-862) in Kibana can lead to unauthorized execution of Elastic Defend response actions on managed hosts via Accessing Functionality Not Properly Constrained by ACLs (CAPEC-1). A Kibana user who holds only detection rule authoring privileges for the Elastic Security solution can associate automated endpoint response actions with a detection rule, even though the dedicated Endpoint response action privileges that govern those capabilities (host isolation, process operations, and execute operations) have not been granted to that user. When such a rule generates alerts, the associated response actions are carried out against the matching hosts.

**Affected Versions:**  
All versions from 8.9.0 up to and including 8.19.19  
All versions from 9.0.0 up to and including 9.4.4

**Affected Configurations:**  
Deployments that use the Elastic Security solution with Elastic Defend agents enrolled.

**Solutions and Mitigations:**

The issue is resolved in versions 8.19.20, and 9.4.5.

**For Users that Cannot Upgrade:**

There are no workarounds for this vulnerability.

**Indicators of Compromise (IOC)**

No specific indicators of compromise have been identified for this vulnerability.

**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 ( 6.5 ) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N  
**CVE ID:** CVE-2026-72664  
**Problem Type:** CWE-862 - Missing Authorization  
**Impact:** CAPEC-1 - Accessing Functionality Not Properly Constrained by ACLs