CVE-2026-78595 — MEDIUM (4.3)

Vulnerability Description

Missing Authorization in Kibana Leading to Information Disclosure / Missing Authorization (CWE-862) in the Kibana Fleet feature can lead to information disclosure via Privilege Abuse (CAPEC-122). An authenticated user holding read-level Fleet agent privileges in one Kibana space could enumerate agent metadata and access diagnostic content belonging to agents enrolled in other Kibana spaces.

CVSS Score

4.3

MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

NONE

Availability

NONE

Related Weaknesses (CWE)

CWE-862

References

https://discuss.elastic.co/t/kibana-9-4-6-9-5-3-security-update-esa-2026-153/390

FAQ

What is CVE-2026-78595?

CVE-2026-78595 is a vulnerability with a CVSS score of 4.3 (MEDIUM). Missing Authorization in Kibana Leading to Information Disclosure / Missing Authorization (CWE-862) in the Kibana Fleet feature can lead to information disclosure via Privilege Abuse (CAPEC-122). An a...

How severe is CVE-2026-78595?

CVE-2026-78595 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-78595?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.