What is CVE-2026-63138?

CVE-2026-63138 is a medium-severity vulnerability in Elastic Kibana, classified under Improper Neutralization of Special Elements in Data Query Logic. CVSS score: 6.5/10. Published 2026-09-01.

How severe is CVE-2026-63138?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Elastic Kibana

CVE-2026-63138

Improper Neutralization of Special Elements in Data Query Logic (CWE-943) in Kibana can lead to information disclosure via NoSQL Injection (CAPEC-676). An authenticated user with access to the affected query functionality could submit specially crafted input that alters the intended query logic, returning data the user is not authorized to read.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

Affected products

Elastic Kibana — versions 9.5.0

Weakness classification (CWE)

CWE-943 — Improper Neutralization of Special Elements in Data Query Logic

References

security@elastic.co

Frequently asked questions

What is CVE-2026-63138?: CVE-2026-63138 is a medium-severity vulnerability in Elastic Kibana, classified under Improper Neutralization of Special Elements in Data Query Logic. CVSS score: 6.5/10. Published 2026-09-01.
How severe is CVE-2026-63138?: Medium severity. CVSS v3 base score is 6.5 out of 10.