Missing Authorization in Kibana Fleet Plugin Leading to Cross-Space Agent Data Disclosure

published 2026-09-03 2 mo ago modified 2026-09-09 2 mo ago also BIT-elk-2026-78595 , BIT-kibana-2026-78595 , EUVD-2026-70659

cvss: 4.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 20%
public exploits: 0; none known

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.

Patch / fix

fixed in 4

bitnami elk 9.4.6, 9.5.3
bitnami kibana 9.4.6, 9.5.3
elastic kibana 9.4.6, 9.5.3
elasticsearch kibana 9.4.6, 9.5.3

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 2 mo ago (2026-09-03)

Exploit prediction

0.28% chance of exploitation in the next 30 days, higher than 20% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	4.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
OSV	3.1	4.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Affected packages

ecosystem	package	affected	fixed in
bitnami	elk	>=9.1.0, <9.4.6 >=9.5.0, <9.5.3	9.4.6 9.5.3
bitnami	kibana	>=9.1.0, <9.4.6 >=9.5.0, <9.5.3	9.4.6 9.5.3

Affected products

Elastic Kibana

Classification

Weakness

CWE-862 Missing Authorization

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.

Summary