Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in Kibana Leading to Unauthorized Resource Deletion
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 resources via Path Traversal (CAPEC-126). A low-privileged user could cause a subsequent action taken by a higher-privileged user in the Fleet administration interface to act on an unintended target, resulting in the deletion of resources including accounts with elevated privileges.
Affected Versions:
- 8.x: All versions from 8.0.0 up to and including 8.19.16
- 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:
Kibana deployments with Fleet enabled where users of differing privilege levels both have access to Fleet configuration.
Solutions and Mitigations:
The issue is resolved in Kibana versions 8.19.17, 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: Medium ( 6.3 ) - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:L
CVE ID: CVE-2026-78591
Problem Type: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Impact: CAPEC-126 - Path Traversal