Unintended Proxy or Intermediary ('Confused Deputy') in Kibana Leading to Unauthorized Information Exposure

published 2026-07-21 3 mo ago modified 2026-10-24 15 d ago also BIT-elk-2026-49092 , BIT-kibana-2026-49092 , EUVD-2026-46385

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

Unintended Proxy or Intermediary ('Confused Deputy') (CWE-441) in Kibana can lead to unauthorized information exposure via Accessing Functionality Not Properly Constrained by ACLs (CAPEC-1). Under certain conditions, a lower-privileged user can cause data from sources they are not authorized to access to be processed using another user's privileges.

Patch / fix

fixed in 4

bitnami elk 9.4.3
bitnami kibana 9.4.3
elastic kibana 9.4.3
elasticsearch kibana 9.4.3

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 3 mo ago (2026-07-22)

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	>=9.4.0, <9.4.3	9.4.3
bitnami	kibana	>=9.4.0, <9.4.3	9.4.3

Affected products

Elastic Kibana

Classification

Weakness

CWE-863 Incorrect Authorization

References

discuss.elastic.co /t/kibana-9-4-3-security-update-esa-2026-54/388553
vendor-advisory, advisory
nvd.nist.gov /vuln/detail/CVE-2026-49092
web

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