Vulnerability Report

CVE-2026-4498

Title: Kibana Fleet plugin privilege abuse for information disclosure

Other

Proof Of Concept

No public PoC currently indexed for CVE-2026-4498.

CWE Category CWE-250

Published Date Apr 08, 2026

Modified Date Jul 25, 2026

Exploit Status Not Found

Score 7.7 CVSS v3.1

Exploit Probability (EPSS)

0.30%

Vulnerability Summary

CVE-2026-4498: Execution with Unnecessary Privileges (CWE-250) in Kibana’s Fleet plugin debug route handlers can lead reading index data beyond their direct Elasticsearch RBAC scope via Privilege Abuse (CAPEC-122). This requires an authenticated Kibana user with Fleet sub-feature privileges (such as agents, agent policies, and settings management).

Impacted Vendors

elastic 1

elasticsearch 1

Reference Links

https://discuss.elastic.co/t/kibana-8-19-14-9-2-8-9-3-3-security-update-esa-2026-21/385811

CVSS v3.1

Source Entity [email protected]

Severity HIGH

7.7

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

CHANGED

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

Associated Attack Patterns (CAPEC)

Total: Patterns