VulnerabilityUndergoing Analysis

CVE-2026-78595

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).

MEDIUM 4.3EPSS 0.17%

Does this matter?

Lower severity and a low EPSS score (0.17%). Track it; it rarely justifies an emergency change on its own.

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 3.1: 4.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
EPSS: 0.17% probability · 6th percentile
CISA KEV: Not listed
Weakness: CWE-862
Source: security@elastic.co

References

https://discuss.elastic.co/t/kibana-9-4-6-9-5-3-security-update-esa-2026-153/390160

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.