CVE-2026-49095
Improper Input Validation in Kibana Fleet Leading to Privilege Escalation
CVSS Score
7.2
EPSS Score
0.0%
EPSS Percentile
13th
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.
| CWE | CWE-20 |
| Vendor | elastic |
| Product | kibana |
| Published | May 28, 2026 |
| Last Updated | May 30, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None
Affected Versions
Elastic / Kibana
9.0.0 ≤ 9.3.4 9.4.0 ≤ 9.4.1 8.0.0 ≤ 8.19.15