Is CVE-2026-56151 in the CISA KEV catalog?

No. CVE-2026-56151 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-56151?

CVE-2026-56151 has a CVSS v3 base score of 6.5 (MEDIUM).

How do I fix or mitigate CVE-2026-56151?

No published fix for CVE-2026-56151 has been found yet. Check the linked vendor advisories for guidance as it becomes available.

CVE & CISA-KEV Catalog

CVE-2026-56151

MEDIUM

6.5

CVSS v3

NVD

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.

CWE-20Improper Input Validation

How to fix

No published remediation has been found for this vulnerability's affected products yet.

Mitigation guidance may be in the linked vendor advisories in the References section below.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

EPSS data unavailable for this CVE.

References

Other references1

discuss.elastic.co

Embed a live status badge for CVE-2026-56151

Markdown

[![CVE-2026-56151](https://tridentstack.com/cve/badge/CVE-2026-56151.svg)](https://tridentstack.com/cve/CVE-2026-56151)

HTML

<a href="https://tridentstack.com/cve/CVE-2026-56151"><img src="https://tridentstack.com/cve/badge/CVE-2026-56151.svg" alt="CVE-2026-56151"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-07-01.