Detections
Analytics
CVE-2026-56151
medium
Description
Improper Input Validation (CWE-20) in Kibana can lead to a denial of service via Input Data Manipulation (CAPEC-153). An authenticated user can submit a specially crafted Fleet policy input that is not correctly validated, which can render Fleet agent, server, and policy management functionality unavailable.
References
https://discuss.elastic.co/t/kibana-8-19-17-9-3-6-9-4-3-security-update-esa-2026-45