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