What is CVE-2026-78596?

CVE-2026-78596 is a medium-severity vulnerability, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-09-03.

How severe is CVE-2026-78596?

Medium severity. CVSS v3 base score is 4.3 out of 10.

CVE-2026-78596

CVE-2026-78596

Missing Authorization in Kibana Leading to Unauthorized Modification of Data / Missing Authorization (CWE-862) in Kibana can lead to unauthorized modification of data via Privilege Abuse (CAPEC-122). An authenticated user holding Security read-level access in a single Kibana space could trigger Entity Analytics migration operations that perform privileged writes across all Kibana spaces, regardless of that user's actual access scope.

Vulnerability class: Broken Access Control

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

security@elastic.co

Frequently asked questions

What is CVE-2026-78596?: CVE-2026-78596 is a medium-severity vulnerability, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-09-03.
How severe is CVE-2026-78596?: Medium severity. CVSS v3 base score is 4.3 out of 10.