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: 6.8/10. Published 2026-04-08.

How severe is CVE-2026-33458?

Medium severity. CVSS v3 base score is 6.8 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…

Vulnerability class: SSRF (Server-Side Request Forgery)

EPSS: 0.000 (15.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.8 (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

discuss.elastic.co/t/kibana-9-3-3-security-update-esa-2026-28/385815

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: 6.8/10. Published 2026-04-08.
How severe is CVE-2026-33458?: Medium severity. CVSS v3 base score is 6.8 out of 10.