CVE-2026-78596: CWE-862 Missing Authorization in Elastic Kibana
Description
Missing Authorization in Kibana Leading to Unauthorized Modification of Data / Missing Authorization (CWE-862) in Kibana can lead to unauthorized modification of data via Privilege Abuse (CAPEC-122). An authenticated user holding Security read-level access in a single Kibana space could trigger Entity Analytics migration operations that perform privileged writes across all Kibana spaces, regardless of that user's actual access scope.
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 involves missing authorization checks that permit an authenticated user with limited Security read-level access in one Kibana space to abuse privileges by triggering Entity Analytics migration operations. These operations perform privileged writes across all Kibana spaces, regardless of the user's actual access permissions. The issue affects Kibana versions 8.18.3, 9.0.3, and 9.5.0. No official remediation or patch has been indicated in the vendor advisory or CVE data. There are no known exploits in the wild.
Potential Impact
An authenticated user with Security read-level access in a single Kibana space can modify data across all Kibana spaces, bypassing intended access controls. This unauthorized modification could lead to integrity issues within Kibana data but does not impact confidentiality or availability according to the CVSS vector.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround is currently documented. Until a patch is available, restrict Security read-level access to trusted users only and monitor for unusual activity related to Entity Analytics migration operations.
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: 6a99be83acd9273b494fd168
Added to database: 09/03/2026, 18:37:55 UTC
Last enriched: 09/07/2026, 12:54:15 UTC
Last updated: 10/17/2026, 18:48:22 UTC
Views: 79
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