What is CVE-2026-63144?

CVE-2026-63144 is a medium-severity vulnerability in Elastic Elasticsearch, classified under Uncontrolled Recursion. CVSS score: 6.5/10. Published 2026-07-21.

How severe is CVE-2026-63144?

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

Vulnerability in Elastic Elasticsearch

CVE-2026-63144

Uncontrolled Recursion (CWE-674) in Elasticsearch can lead to denial of service via a specially crafted search request submitted by a low-privileged authenticated user. A user with read-level index access can submit a request that triggers…

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:N/I:N/A:H.

Affected products

Elastic Elasticsearch — versions 9.4.0, 9.3.0, 8.19.0

Weakness classification (CWE)

CWE-674 — Uncontrolled Recursion

References

security@elastic.co

Frequently asked questions

What is CVE-2026-63144?: CVE-2026-63144 is a medium-severity vulnerability in Elastic Elasticsearch, classified under Uncontrolled Recursion. CVSS score: 6.5/10. Published 2026-07-21.
How severe is CVE-2026-63144?: Medium severity. CVSS v3 base score is 6.5 out of 10.