CVE-2026-72679 — Uncontrolled Recursion in Elasticsearch Leading to Denial of Service

Description (CNA)

Elasticsearch does not apply its configurable input length restriction to a user-supplied pattern accepted by an intervals query. Compiling a deeply nested pattern drives unbounded recursion that exhausts the thread stack and raises a fatal error, terminating the Elasticsearch node process and causing a denial of service for that node. An authenticated user holding only read-only privileges on a single searchable index can trigger the condition with one small search request.

Affected (CNA)

Vendor / product	Versions
Elastic / Elasticsearch	affected 8.19.0 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-security-update-esa-2026-81/389501

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.