CVE-2026-72647 — Uncontrolled Recursion in Elasticsearch Leading to Denial of Service

CVE-2026-72647

Uncontrolled Recursion in Elasticsearch Leading to Denial of Service PUBLISHED

Description (CNA)

Uncontrolled Recursion (CWE-674) in Elasticsearch can lead to denial of service via Serialized Data with Nested Payloads (CAPEC-230). An authenticated user holding only read privileges on a single index can submit one specially crafted search request whose deeply nested structure is processed without a depth limit, exhausting the thread stack and terminating the affected node.

Affected (CNA)

Vendor / product	Versions
Elastic / Elasticsearch	affected 8.0.0 through 8.19.19; affected 9.0.0 through 9.4.4

CWE

CWE-674

References

https://discuss.elastic.co/t/elasticsearch-8-19-20-9-4-5-9-5-1-security-update-esa-2026-118/389497

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.