Unintended Proxy or Intermediary ('Confused Deputy') in Kibana Leading to Privilege Escalation

published 2026-09-26 43 d ago modified 2026-10-01 38 d ago also BIT-elk-2026-72668 , BIT-kibana-2026-72668 , EUVD-2026-87792

cvss: 7.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 8%
public exploits: 0; none known

Unintended Proxy or Intermediary ('Confused Deputy') (CWE-441) in Kibana Agent Builder can lead to privilege escalation. A non-administrative user able to edit a shared agent could cause privileged operations to be carried out under the identity of a higher-privileged user who subsequently interacts with that agent. Where the same user can also author workflows, this can extend to full administrative control of Kibana and of the Elasticsearch cluster.

Patch / fix

fixed in 2

bitnami elk 9.4.7
bitnami kibana 9.4.7

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 42 d ago (2026-09-28)

Exploit prediction

0.18% chance of exploitation in the next 30 days, higher than 8% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	7.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
OSV	3.1	7.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N

Affected packages

ecosystem	package	affected	fixed in
bitnami	elk	>=9.4.0, <9.4.7	9.4.7
bitnami	kibana	>=9.4.0, <9.4.7	9.4.7

Affected products

Elastic Kibana

Classification

Weakness

CWE-441 Unintended Proxy or Intermediary

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