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6.5 Medium

CVE-2026-56151 Improper Input Validation (CWE-20) in Kibana can lead to a denial of service via Input Data Manipulation (CAPEC-153)

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.

Affected products and versions

Product Affected versions Fixed in
Kibana 9.4 9.4.0 → 9.4.2 No fix stated
Kibana 9.0 9.0.0 → 9.3.5 No fix stated
Kibana 8.0 8.0.0 → 8.19.16 No fix stated

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