CVE-2026-49095
Improper Input Validation in Kibana Fleet Leading to Privilege Escalation
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.
How to fix CVE-2026-49095
To remediate CVE-2026-49095, upgrade the affected package to a fixed version below.
- —upgrade to 8.19.16 or later
- —upgrade to 8.19.16 or later
Is CVE-2026-49095 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- >= 8.0.0, < 8.19.16, >= 9.0.0, < 9.3.5, >= 9.4.0, < 9.4.2
- >= 8.0.0, < 8.19.16, >= 9.0.0, < 9.3.5, >= 9.4.0, < 9.4.2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N |