Elasticsearch Groovy Scripting Engine Remote Code Execution Vulnerability

The Groovy scripting engine in Elasticsearch allows remote attackers to bypass the sandbox protection mechanism and execute arbitrary shell commands.

Published 8 Oct 2026Updated 8 Oct 2026491 sources
CVSS 9.8 ✓ VERIFIED REFERENCE△ CISA KEV

What happened

The Groovy scripting engine in Elasticsearch allows remote attackers to bypass the sandbox protection mechanism and execute arbitrary shell commands.

Affected versions

Elasticsearch: See original advisory Fixed: See vendor advisory.

Why it matters

This source correlation may provide earlier visibility while structured CVE metadata is still being updated.

Detection & mitigation

  • Review the original advisory and validate affected versions.
  • Apply vendor-provided updates or mitigations when available.

Public PoC references