Improper Limitation of a Pathname to a Restricted Directory in Kibana Leading to Unauthorized Deletion of Privileged Resources
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (CWE-22) in the Kibana Fleet feature can lead to the unauthorized deletion of privileged resources via Path Traversal (CAPEC-126). A low-privileged user holding Fleet Settings write access could cause a subsequent administrative action to act on unintended internal resources, resulting in the deletion of privileged resources such as user accounts and other organizational assets. Exploitation requires an administrator to interact with the affected Fleet interface.
Affected Versions:
- 8.x: All versions from 8.0.0 up to and including 8.19.17
- 9.x:
- 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 deployments of Kibana in which one or more users have been granted Fleet Settings write privileges are affected.
Solutions and Mitigations:
The issue is resolved in Kibana versions 8.19.18, 9.3.6, and 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-2026-78590
Problem Type: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Impact: CAPEC-126 - Path Traversal