CVE-2026-4498: CWE-250 Execution with Unnecessary Privileges in Elastic Kibana
Execution with Unnecessary Privileges (CWE-250) in Kibana’s Fleet plugin debug route handlers can lead reading index data beyond their direct Elasticsearch RBAC scope via Privilege Abuse (CAPEC-122). This requires an authenticated Kibana user with Fleet sub-feature privileges (such as agents, agent policies, and settings management).
AI Analysis
Technical Summary
This vulnerability (CVE-2026-4498) affects Elastic Kibana 8.0.0, specifically the Fleet plugin's debug route handlers. It involves CWE-250 (Execution with Unnecessary Privileges), allowing authenticated users with Fleet sub-feature privileges to access Elasticsearch index data beyond their direct RBAC permissions through privilege abuse (CAPEC-122). The CVSS 3.1 base score is 7.7, reflecting network attack vector, low attack complexity, required privileges, no user interaction, scope change, and high confidentiality impact. No vendor-provided patch or official remediation level is currently documented.
Potential Impact
An authenticated Kibana user with Fleet sub-feature privileges can read sensitive Elasticsearch index data beyond their authorized scope, potentially exposing confidential information. The vulnerability does not affect integrity or availability but compromises data confidentiality. This could lead to unauthorized data disclosure within environments using Kibana 8.0.0 with Fleet plugin enabled.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict Fleet sub-feature privileges to trusted users only and monitor access to Kibana. Avoid granting unnecessary Fleet privileges to reduce risk exposure.
CVE-2026-4498: CWE-250 Execution with Unnecessary Privileges in Elastic Kibana
Description
Execution with Unnecessary Privileges (CWE-250) in Kibana’s Fleet plugin debug route handlers can lead reading index data beyond their direct Elasticsearch RBAC scope via Privilege Abuse (CAPEC-122). This requires an authenticated Kibana user with Fleet sub-feature privileges (such as agents, agent policies, and settings management).
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-4498) affects Elastic Kibana 8.0.0, specifically the Fleet plugin's debug route handlers. It involves CWE-250 (Execution with Unnecessary Privileges), allowing authenticated users with Fleet sub-feature privileges to access Elasticsearch index data beyond their direct RBAC permissions through privilege abuse (CAPEC-122). The CVSS 3.1 base score is 7.7, reflecting network attack vector, low attack complexity, required privileges, no user interaction, scope change, and high confidentiality impact. No vendor-provided patch or official remediation level is currently documented.
Potential Impact
An authenticated Kibana user with Fleet sub-feature privileges can read sensitive Elasticsearch index data beyond their authorized scope, potentially exposing confidential information. The vulnerability does not affect integrity or availability but compromises data confidentiality. This could lead to unauthorized data disclosure within environments using Kibana 8.0.0 with Fleet plugin enabled.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict Fleet sub-feature privileges to trusted users only and monitor access to Kibana. Avoid granting unnecessary Fleet privileges to reduce risk exposure.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- elastic
- Date Reserved
- 2026-03-20T10:53:18.459Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69d737031cc7ad14da4194de
Added to database: 4/9/2026, 5:20:03 AM
Last enriched: 4/9/2026, 5:26:20 AM
Last updated: 4/10/2026, 6:46:11 AM
Views: 13
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