CVE-2026-78595: CWE-862 Missing Authorization in Elastic Kibana
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.
CVSS v3.1
Score 4.3medium
Affected software
Elastic
Kibana
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-862) in Elastic Kibana's Fleet feature involves missing authorization controls, enabling an authenticated user with limited read privileges in one Kibana space to enumerate and access metadata and diagnostic information of agents enrolled in other Kibana spaces. The flaw results in unauthorized information disclosure but does not impact integrity or availability. The affected versions explicitly include 9.1.0 and 9.5.0. No official patch or remediation level has been provided as of the published date.
Potential Impact
An attacker with authenticated read-level Fleet agent privileges in one Kibana space can disclose sensitive agent metadata and diagnostic content from other spaces, potentially exposing information that should be isolated. There is no indication of impact on data integrity or system availability. No known exploits are reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict Fleet agent read privileges to trusted users only and monitor access controls to limit potential information disclosure.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- elastic
- Date Reserved
- 2026-08-24T21:13:51.299Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a99be83acd9273b494fd166
Added to database: 09/03/2026, 18:37:55 UTC
Last enriched: 09/07/2026, 12:54:10 UTC
Last updated: 10/17/2026, 06:48:20 UTC
Views: 77
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