CVE-2026-78584: CWE-204 Observable Response Discrepancy in Elastic Kibana
Description
Observable Response Discrepancy (CWE-204) in the Kibana Osquery feature can lead to information disclosure via Query System for Information (CAPEC-54). An authenticated user holding Osquery live-query privileges could determine whether a scheduled query identifier exists in a Kibana space they are not authorized to access.
CVSS v3.1
Score 4.3medium
Affected software
Elastic
Kibana
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Kibana's Osquery feature allows an authenticated user with live-query privileges to detect whether a scheduled query identifier exists in a Kibana space outside their authorization scope. The issue is classified as an Observable Response Discrepancy (CWE-204) and relates to information disclosure via query system behavior (CAPEC-54). It affects Kibana version 9.4.0. No official remediation or patch has been documented as of the published date.
Potential Impact
An attacker with valid authentication and Osquery live-query privileges can gain knowledge about the existence of scheduled query identifiers in unauthorized Kibana spaces. This constitutes information disclosure (confidentiality impact is low). There is no impact on integrity or 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. Since no official fix or workaround is documented, administrators should review user privileges carefully, especially limiting Osquery live-query permissions to trusted users only. Monitor Elastic's advisories for updates on patches or mitigations.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- elastic
- Date Reserved
- 2026-08-24T21:13:45.972Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a983847acd9273b495d15cc
Added to database: 09/02/2026, 14:52:55 UTC
Last enriched: 09/07/2026, 13:43:19 UTC
Last updated: 10/15/2026, 18:48:23 UTC
Views: 65
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