Medium severity · published Sep 3, 2026
CVE-2026-78595
Missing Authorization in Kibana Fleet Plugin Leading to Cross-Space Agent Data Disclosure
4.3
CVSS
0.3%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 20% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KI
Kibana · Elastic
9.1.0 through 9.4.5; 9.5.0 through 9.5.2 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-78595
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-78595
discuss.elastic.co
https://discuss.elastic.co/t/kibana-9-4-6-9-5-3-security-update-esa-2026-153/390160
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