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OpenAdvisories
Medium · 6.5 CVE-2026-72638 EUVD-2026-58284GHSA-rx34-f5m9-h9p5

Uncontrolled Recursion in Elasticsearch Leading to Denial of Service

Published Aug 13, 2026 · Updated Aug 13, 2026 · Assigned by elastic

Description

Uncontrolled Recursion (CWE-674) in Elasticsearch can lead to denial of service via Input Data Manipulation (CAPEC-153). An authenticated user holding only low-privileged index creation permissions can submit a single request containing a specially crafted, malformed custom analysis definition that is resolved recursively without a cycle or depth check, exhausting the thread stack and terminating the affected node.

Affected products

VendorProductAffectedFixed
Elastic Elasticsearch 8.0.0 – ≤ 8.19.19, 9.0.0 – ≤ 9.4.4 —

Advisories 1

References