Elastic Kibana Fleet Path Traversal Deletion Vulnerability
CVE-2026-78590 Published on September 2, 2026
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.
Vulnerability Analysis
CVE-2026-78590 is exploitable with network access, requires user interaction and a small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality, a high impact on integrity and availability.
Weakness Type
What is a Directory traversal Vulnerability?
The software uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the software does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.
CVE-2026-78590 has been classified to as a Directory traversal vulnerability or weakness.
Products Associated with CVE-2026-78590
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Affected Versions
Elastic Kibana:- Version 8.0.0, <= 8.19.17 is affected.
- Version 9.0.0, <= 9.3.5 is affected.
- Version 9.4.0, <= 9.4.2 is affected.