Elasticsearch 8.19.21, 9.4.6, 9.5.2 Security Update (ESA-2026-196)

Uncontrolled Recursion in Elasticsearch Leading to Denial of Service Uncontrolled Recursion (CWE-674) in Elasticsearch can lead to Denial of Service via a specially crafted, deeply nested request submitted to the aggregation feature of the search API. Elasticsearch contains an uncontrolled recursion weakness in its search aggregation processing. An authenticated user with read access to a single index can submit a specially crafted request containing deeply nested aggregation definitions. Processing this request triggers unbounded recursive execution that exhausts the server process's availab…

Elastic Security Announcementsで読む

2026/10/07 03:50、Elastic Security Announcementsが「Elasticsearch 8.19.21, 9.4.6, 9.5.2 Security Update (ESA-2026-196)」を公開しました (種別: 脆弱性アドバイザリ)。関連する技術: Elasticsearch / OpenSearch。