CVE-2026-78595
Received Received - Intake

Missing Authorization in Kibana Fleet Exposes Agent Data

Publication date: 2026-09-03

Last updated on: 2026-09-03

Assigner: Elastic

Description
Missing Authorization in Kibana Leading to Information Disclosure / Missing Authorization (CWE-862) in the Kibana Fleet feature can lead to information disclosure via Privilege Abuse (CAPEC-122). An authenticated user holding read-level Fleet agent privileges in one Kibana space could enumerate agent metadata and access diagnostic content belonging to agents enrolled in other Kibana spaces.

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Meta Information

Published
2026-09-03
Last Modified
2026-09-03
Generated
2026-09-04
AI Q&A
2026-09-03
EPSS Evaluated
N/A
NVD
CVE-2026-78595
EUVD
EUVD-2026-70659

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
elastic kibana *

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-862 The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

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Executive Summary

This vulnerability is a Missing Authorization issue in Kibana's Fleet feature. It allows an authenticated user with read-level Fleet agent privileges in one Kibana space to access agent metadata and diagnostic content from agents enrolled in other Kibana spaces. This happens due to insufficient access controls, enabling privilege abuse.

Detection Guidance

To detect this vulnerability, check if your Kibana instance is running versions 9.4.6 or 9.5.3. Verify if Fleet space awareness is enabled and if multiple Kibana spaces are in use. Use Kibana logs to monitor unauthorized access attempts to agent metadata or diagnostic content across spaces.

Impact Analysis

An attacker with limited access could exploit this to view sensitive agent data across different Kibana spaces. This may include diagnostic information or metadata that could be used for further attacks or data exfiltration.

Compliance Impact

This vulnerability could lead to unauthorized access to sensitive data, violating confidentiality requirements in GDPR and HIPAA. Organizations may face compliance violations, fines, or reputational damage due to potential data exposure.

Mitigation Strategies

Update Kibana to the latest version to address the missing authorization issue in the Fleet feature. Review and restrict user privileges to ensure least privilege access, particularly for Fleet agent privileges across different Kibana spaces.

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