Missing Auth in Kibana Fleet: Read-Only Agent Credentials Leak
CVE-2026-78595 Published on September 3, 2026
Missing Authorization in Kibana Fleet Plugin Leading to Cross-Space Agent Data Disclosure
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.
Vulnerability Analysis
CVE-2026-78595 can be exploited with network access, and requires 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 a small impact on confidentiality, a small impact on integrity and availability.
Weakness Type
What is an AuthZ Vulnerability?
The software does not perform an authorization check when an actor attempts to access a resource or perform an action.
CVE-2026-78595 has been classified to as an AuthZ vulnerability or weakness.
Products Associated with CVE-2026-78595
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Affected Versions
Elastic Kibana:- Version 9.1.0, <= 9.4.5 is affected.
- Version 9.5.0, <= 9.5.2 is affected.