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.
SeverityMedium
CVSS6.5
Exploit probability—
Product
Elastic Kibana
PublishedJul 1, 2026
First seenJul 1, 2026
Weakness typeCWE-20Improper input validation
How to fix
Update
- elastic kibana8.19.17, 9.3.6, 9.4.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| elastic kibana | 8.0.0 ≤ v < 8.19.17, 9.0.0 ≤ v < 9.3.6, 9.4.0 ≤ v < 9.4.3 | 8.19.17, 9.3.6, 9.4.3 |
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