What is CVE-2026-56144?

CVE-2026-56144 is a medium-severity vulnerability in Elastic Elasticsearch, classified under Incorrect Authorization. CVSS score: 5.3/10. Published 2026-07-21.

How severe is CVE-2026-56144?

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

Auth bypass in Elastic Elasticsearch

CVE-2026-56144

Incorrect Authorization (CWE-863) in Elasticsearch can allow an authenticated user with limited index privileges to exploit insufficient authorization controls in the ingest simulation feature. By targeting indices they are not authorized…

Vulnerability class: Broken Access Control

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.

Affected products

Elastic Elasticsearch — versions 9.4.0, 9.0.0, 8.12.0

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

security@elastic.co

Frequently asked questions

What is CVE-2026-56144?: CVE-2026-56144 is a medium-severity vulnerability in Elastic Elasticsearch, classified under Incorrect Authorization. CVSS score: 5.3/10. Published 2026-07-21.
How severe is CVE-2026-56144?: Medium severity. CVSS v3 base score is 5.3 out of 10.