Server-Side Request Forgery (SSRF) in Kibana Leading to Unauthorized Network Access

published 2026-05-28 5 mo ago modified 2026-09-08 2 mo ago also BIT-elk-2026-49093 , BIT-kibana-2026-49093 , EUVD-2026-33035

cvss: 6.3; 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 9%
public exploits: 0; none known

Server-Side Request Forgery (CWE-918) in Kibana can allow an authenticated user with connector management privileges to bypass the operator-configured connector allowlist, causing the Kibana server to issue outbound requests to destinations the egress controls were intended to block.

Patch / fix

fixed in 4

bitnami elk 9.3.3
bitnami kibana 9.3.3
elastic kibana 9.3.3
elasticsearch kibana 9.3.3

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 5 mo ago (2026-05-29)

Exploit prediction

0.20% chance of exploitation in the next 30 days, higher than 9% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	6.3	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
NVD	3.1	7.7	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
OSV	3.1	7.7	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

Affected packages

ecosystem	package	affected	fixed in
bitnami	elk	>=9.3.0, <9.3.3	9.3.3
bitnami	kibana	>=9.3.0, <9.3.3	9.3.3

Affected products

Elastic Kibana

Classification

Weakness

CWE-918 Server-Side Request Forgery

References

discuss.elastic.co /t/kibana-9-3-3-security-update-esa-2026-40/386562
vendor-advisory, advisory
nvd.nist.gov /vuln/detail/CVE-2026-49093
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