CVE-2026-78591
Received Received - Intake

Path Traversal in Kibana Fleet Feature

Publication date: 2026-09-02

Last updated on: 2026-09-02

Assigner: Elastic

Description
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.

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Meta Information

Published
2026-09-02
Last Modified
2026-09-02
Generated
2026-09-02
AI Q&A
2026-09-02
EPSS Evaluated
N/A
NVD
CVE-2026-78591
EUVD
EUVD-2026-70062

Affected Vendors & Products

Showing 4 associated CPEs
Vendor Product Version / Range
elastic kibana *
elastic kibana to 8.19.17 (exc)
elastic kibana to 9.3.6 (exc)
elastic kibana From 9.4.0 (inc) to 9.4.3 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-22 The product 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 product 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.

Attack-Flow Graph

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Executive Summary

CVE-2026-78591 is a Path Traversal vulnerability in Kibana's Fleet feature. It allows a low-privileged user to manipulate file paths in the Fleet administration interface, causing higher-privileged users to unintentionally delete resources, including accounts with elevated privileges.

Detection Guidance

To detect this vulnerability, check if your Kibana instance is running a vulnerable version (8.19.16 or earlier in 8.x, 9.3.5 or earlier in 9.x, or 9.4.0 to 9.4.2). Verify if Fleet is enabled and if multiple users with differing privilege levels have access to Fleet configuration.

Impact Analysis

This vulnerability could lead to unauthorized deletion of critical resources such as user accounts, data, or configurations. Attackers with low privileges might trick administrators into performing harmful actions, potentially disrupting operations or compromising system integrity.

Mitigation Strategies

Immediately upgrade Kibana to a patched version: 8.19.17, 9.3.6, or 9.4.3. If upgrading is not possible, disable the Fleet feature as a temporary measure. Ensure only trusted users have access to Fleet configuration.

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