CVE-2026-78583: CWE-863 Incorrect Authorization in Elastic Kibana
Description
Incorrect Authorization (CWE-863) in Kibana can lead to privilege escalation via Input Data Manipulation (CAPEC-153). Elasticsearch cluster privilege declarations originating from integration packages were not validated before being used to mint credentials for enrolled Elastic Agents. A user holding Fleet management privileges could therefore cause every Elastic Agent on a targeted policy to receive a credential carrying arbitrarily elevated Elasticsearch cluster privileges, up to and including full cluster administration.
CVSS v3.1
Score 8.1high
Affected software
Elastic
Kibana
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-863) in Kibana arises because Elasticsearch cluster privilege declarations originating from integration packages are not properly validated before being used to mint credentials for enrolled Elastic Agents. As a result, a user holding Fleet management privileges can escalate privileges by causing every Elastic Agent on a targeted policy to receive credentials with elevated Elasticsearch cluster privileges, potentially up to full cluster administration. The issue involves incorrect authorization checks and input data manipulation (CAPEC-153).
Potential Impact
An attacker with Fleet management privileges can escalate their privileges to gain elevated Elasticsearch cluster privileges on Elastic Agents, potentially achieving full cluster administration. This could lead to unauthorized access and control over the Elasticsearch cluster via compromised Elastic Agents.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround has been published at this time.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- elastic
- Date Reserved
- 2026-08-24T21:13:45.971Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a99be83acd9273b494fd162
Added to database: 09/03/2026, 18:37:55 UTC
Last enriched: 09/07/2026, 12:53:56 UTC
Last updated: 10/16/2026, 18:48:24 UTC
Views: 73
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