Vulnerability Report

CVE-2026-56151

Title: Improper Input Validation in Kibana

DoS

Proof Of Concept

No public PoC currently indexed for CVE-2026-56151.

CWE Category CWE-20

Published Date Jul 01, 2026

Modified Date Jul 02, 2026

Exploit Status Not Found

Score 6.5 CVSS v3.1

Exploit Probability (EPSS)

0.28%

Vulnerability Summary

CVE-2026-56151: 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.

Impacted Vendors

elastic 1

elasticsearch 1

Reference Links

https://discuss.elastic.co/t/kibana-8-19-17-9-3-6-9-4-3-security-update-esa-2026-45

CVSS v3.1

Source Entity [email protected]

Severity MEDIUM

6.5

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2026-56151 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

July 02, 2026 MODIFIED

Vulnerability data updated via NVD.

July 01, 2026 MODIFIED

Vulnerability data updated via NVD.

July 01, 2026 MODIFIED

Vulnerability data updated via NVD.

July 01, 2026 MODIFIED

Vulnerability data updated via NVD.

Attack Vector Matrix

Access Vector NETWORK

Complexity LOW

Privileges N/A

Interaction NONE

CVSS Vector String


                                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected Stack

No specific products linked.