CVE-2026-56148

Uncontrolled Recursion (CWE-674) in Elasticsearch can lead to a denial of service via Excessive Allocation (CAPEC-130). An authenticated user can submit a specially crafted query that causes excessive resource consumption while the request is processed, which may render the affected node unavailable.

Score

CVSS 3.1 6.5 Medium

Status

Analyzed - security@elastic.co

Published

2026-07-01

Last modified

2026-10-25

Weaknesses

CWE-674

Affected products

• Elasticsearch (Elastic)

References

• https://discuss.elastic.co/t/elasticsearch-8-19-17-9-3-6-9-4-3-security-update-esa-2026-42