What is CVE-2026-26938?

CVE-2026-26938 is a high-severity vulnerability in Elastic Kibana, classified under Improper Neutralization of Special Elements Used in a Template Engine. CVSS score: 8.6/10. Published 2026-02-26.

How severe is CVE-2026-26938?

High severity. CVSS v3 base score is 8.6 out of 10.

Vulnerability in Elastic Kibana

CVE-2026-26938

Improper Neutralization of Special Elements Used in a Template Engine (CWE-1336) exists in Workflows in Kibana which could allow an attacker to read arbitrary files from the Kibana server filesystem, and perform Server-Side Request Forgery…

EPSS: 0.001 (22.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N.

Affected products

Elastic Kibana — versions 9.3.0

Weakness classification (CWE)

CWE-1336 — Improper Neutralization of Special Elements Used in a Template Engine

References

discuss.elastic.co/t/kibana-9-3-1-security-update-esa-2026-17/385253

Frequently asked questions

What is CVE-2026-26938?: CVE-2026-26938 is a high-severity vulnerability in Elastic Kibana, classified under Improper Neutralization of Special Elements Used in a Template Engine. CVSS score: 8.6/10. Published 2026-02-26.
How severe is CVE-2026-26938?: High severity. CVSS v3 base score is 8.6 out of 10.