# Kibana 8.19.21, 9.4.6, 9.5.2 Security Update (ESA-2026-135)

**URL:** <https://discuss.elastic.co/t/kibana-8-19-21-9-4-6-9-5-2-security-update-esa-2026-135/390091>\
**Category:** Security Announcements\
**Created:** [September 1, 2026, 6:46pm UTC](https://discuss.elastic.co/t/kibana-8-19-21-9-4-6-9-5-2-security-update-esa-2026-135/390091 "2026-09-01T18:46:19Z")\
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**Author:** ![ismisepaul](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/ismisepaul/32/102235_2.png) [@ismisepaul](https://discuss.elastic.co/u/ismisepaul)\
**Post date:** [September 1, 2026, 6:46pm UTC](https://discuss.elastic.co/t/kibana-8-19-21-9-4-6-9-5-2-security-update-esa-2026-135/390091/1 "2026-09-01T18:46:19Z")

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**Execution with Unnecessary Privileges in Kibana Leading to Information Disclosure**

Execution with Unnecessary Privileges (CWE-250) in the Kibana machine learning feature can lead to information disclosure via Privilege Abuse (CAPEC-122). An operation available to users holding only read access to the machine learning feature was performed with an internal service identity rather than the identity of the requesting user. Such a user could therefore receive data from Elasticsearch indices they are not authorized to read. No Elasticsearch cluster or index privileges are required.

**Affected Versions:**

> - 8.x: All versions from 8.0.0 up to and including 8.19.20
> - 9.x:

- All versions from 9.0.0 up to and including 9.4.5
- All versions from 9.5.0 up to and including 9.5.1

**Affected Configurations:**

All configurations are affected.

**Solutions and Mitigations:**

The issue is resolved in Kibana versions 8.19.21, 9.4.6, and 9.5.2.

**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:H/I:N/A:N  
**CVE ID:** CVE-2026-72654  
**Problem Type:** CWE-250 - Execution with Unnecessary Privileges  
**Impact:** CAPEC-122 - Privilege Abuse

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_[View the full topic](https://discuss.elastic.co/t/kibana-8-19-21-9-4-6-9-5-2-security-update-esa-2026-135/390091)._