CVE-2026-49095

Improper Input Validation in Kibana Fleet Leading to Privilege Escalation

Published May 28, 2026 CVSS 3.1 · 7.2 High EPSS < 1% KEV · Not listed
Description
Improper Input Validation (CWE-20) in the Kibana Fleet agent policy management feature can lead to privilege escalation. An authenticated user with Fleet management privileges can manipulate agent policy configuration by injecting values into a configuration override mechanism that is not adequately validated. An attacker can cause Elastic Agents to be issued API keys with elevated Elasticsearch privileges, potentially granting unauthorized read and write access to sensitive Elasticsearch security indices beyond what is intended for the Fleet management role.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
CPEs cpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:*
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Elastic
Elastic kibana
Vendors & Products Elastic
Elastic kibana
Type Values Removed Values Added
Description Improper Input Validation (CWE-20) in the Kibana Fleet agent policy management feature can lead to privilege escalation. An authenticated user with Fleet management privileges can manipulate agent policy configuration by injecting values into a configuration override mechanism that is not adequately validated. An attacker can cause Elastic Agents to be issued API keys with elevated Elasticsearch privileges, potentially granting unauthorized read and write access to sensitive Elasticsearch security indices beyond what is intended for the Fleet management role.
Title Improper Input Validation in Kibana Fleet Leading to Privilege Escalation
Weaknesses CWE-20
References
Metrics cvssV3_1

{'score': 7.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
elastic
Published
Updated
May 30, 2026, 3:57 AM
Reserved
May 27, 2026, 11:31 AM
Status
Analyzed
Published
May 28, 2026, 9:16 PM
Modified
Jul 21, 2026, 10:10 AM