Elastic Cloud Enterprise (ECE) 3.8.6 and 4.2.1 Security Update (ESA-2026-221)

Incorrect Authorization in Elastic Cloud Enterprise (ECE) Leading to Unauthorized Modification of Platform Settings Incorrect Authorization (CWE-863) in Elastic Cloud Enterprise (ECE) can lead to unauthorized modification of platform-level settings via Accessing Functionality Not Properly Constrained by ACLs (CAPEC-1). An authenticated user with read-only access to the platform can change an installation-wide account setting that only platform administrators are permitted to change. Affected Versions: 3.x: All versions from 3.8.0 up to and including 3.8.5 4.x: All versions from 4.0.0 up to an…

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On 10/29/2026, 07:47 PM, Elastic Security Announcements published "Elastic Cloud Enterprise (ECE) 3.8.6 and 4.2.1 Security Update (ESA-2026-221)" (type: Advisory). Related technologies: Elasticsearch / OpenSearch.