# Kibana 9.4.6, 9.5.1 Security Update (ESA-2026-149)

**URL:** <https://discuss.elastic.co/t/kibana-9-4-6-9-5-1-security-update-esa-2026-149/390069>\
**Category:** Security Announcements\
**Created:** [September 1, 2026, 6:41pm UTC](https://discuss.elastic.co/t/kibana-9-4-6-9-5-1-security-update-esa-2026-149/390069 "2026-09-01T18:41:12Z")\
**Posts on this page:** 1\
**Page:** 1

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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, 6:41pm UTC](https://discuss.elastic.co/t/kibana-9-4-6-9-5-1-security-update-esa-2026-149/390069/1 "2026-09-01T18:41:12Z")

</div>

**Missing Authorization in Kibana Leading to Unauthorized Disclosure of Fleet Deployment Metadata**

Missing Authorization (CWE-862) in Kibana can lead to information disclosure via Exploiting Incorrectly Configured Access Control Security Levels (CAPEC-180). An authenticated user holding minimal Elasticsearch privileges could bypass Kibana feature authorization and space access controls, resulting in the unauthorized disclosure of Fleet deployment metadata from the default Kibana space.

**Affected Versions:**

- 9.x:
  - All versions from 9.0.0 up to and including 9.4.5
  - Version 9.5.0

Versions prior to 9.0.0, including all 8.x releases, are not affected because the affected functionality did not exist.

**Affected Configurations:**

Kibana deployments with native agentless connector infrastructure configured and active Fleet policies present in the default Kibana space.

**Solutions and Mitigations:**

The issue is resolved in Kibana versions 9.4.6 and 9.5.1.

**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 ( 4.3 ) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N  
**CVE ID:** CVE-2026-78603  
**Problem Type:** CWE-862 - Missing Authorization  
**Impact:** CAPEC-180 - Exploiting Incorrectly Configured Access Control Security Levels