# Kibana 8.19.17, 9.3.6, 9.4.3 Security Update (ESA-2026-94)

**URL:** <https://discuss.elastic.co/t/kibana-8-19-17-9-3-6-9-4-3-security-update-esa-2026-94/389512>\
**Category:** Security Announcements\
**Created:** [August 13, 2026, 10:47am UTC](https://discuss.elastic.co/t/kibana-8-19-17-9-3-6-9-4-3-security-update-esa-2026-94/389512 "2026-08-13T10:47:42Z")\
**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, 10:47am UTC](https://discuss.elastic.co/t/kibana-8-19-17-9-3-6-9-4-3-security-update-esa-2026-94/389512/1 "2026-08-13T10:47:42Z")

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**Relative Path Traversal in Kibana Fleet Leading to Unauthorized Deletion of Users and Other Resources**

**Description:**  
Relative Path Traversal (CWE-23) in Kibana can lead to the unauthorized deletion of Kibana resources via Relative Path Traversal (CAPEC-139). Kibana Fleet accepted a user-supplied identifier for a Fleet Server host configuration without rejecting relative traversal sequences. The identifier is stored as provided and is later incorporated into the request that Kibana issues when that configuration is removed.

**Affected Versions:**

> - All versions from 8.0.0 up to and including 8.19.16
> - All versions from 9.0.0 up to and including 9.3.5
> - All versions from 9.4.0 up to and including 9.4.2

**Affected Configurations:**  
All configurations are affected.

**Solutions and Mitigations:**

The issue is resolved in versions 8.19.17, 9.3.6, 9.4.3.

**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: High ( 7.3 ) - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:H  
**CVE ID:** CVE-2026-72677  
**Problem Type:** CWE-23 - Relative Path Traversal  
**Impact:** CAPEC-139 - Relative Path Traversal