What is CVE-2026-56152?

CVE-2026-56152 is a medium-severity vulnerability in Elastic Defend, classified under Incorrect Authorization. CVSS score: 5.3/10. Published 2026-07-01.

How severe is CVE-2026-56152?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Auth bypass in Elastic Defend

CVE-2026-56152

Incorrect Authorization (CWE-863) in Kibana can lead to unauthorized information disclosure via Accessing Functionality Not Properly Constrained by ACLs (CAPEC-1). Under certain conditions, a low-privileged authenticated user can access response action data that they are not authorized to view.

Vulnerability class: Broken Access Control

Published 2026-07-01 · last modified 2026-09-04.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.003 (21.0th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 21st percentile — 21.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Elastic Defend — versions 9.3.0, 8.6.0, 9.0.0
Elastic Endpoint Security
Elastic Kibana

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

Frequently asked questions

What is CVE-2026-56152?: CVE-2026-56152 is a medium-severity vulnerability in Elastic Defend, classified under Incorrect Authorization. CVSS score: 5.3/10. Published 2026-07-01.
How severe is CVE-2026-56152?: Medium severity. CVSS v3 base score is 5.3 out of 10.