What is CVE-2026-33458?

CVE-2026-33458 is a medium-severity vulnerability in Elastic Kibana, classified under Server-Side Request Forgery (SSRF). CVSS score: 6.3/10. Published 2026-04-08.

How severe is CVE-2026-33458?

Medium severity. CVSS v3 base score is 6.3 out of 10.

SSRF in Elastic Kibana

CVE-2026-33458

Server-Side Request Forgery (CWE-918) in Kibana One Workflow can lead to information disclosure. An authenticated user with workflow creation and execution privileges can bypass host allowlist restrictions in the Workflows Execution Engine, potentially exposing sensitive internal endpoints and data.

Vulnerability class: SSRF (Server-Side Request Forgery)

EPSS: 0.002 (13.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N.

Affected products

Elastic Kibana — versions 9.3.0

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

References

security@elastic.co (Vendor Advisory)

Frequently asked questions

What is CVE-2026-33458?: CVE-2026-33458 is a medium-severity vulnerability in Elastic Kibana, classified under Server-Side Request Forgery (SSRF). CVSS score: 6.3/10. Published 2026-04-08.
How severe is CVE-2026-33458?: Medium severity. CVSS v3 base score is 6.3 out of 10.