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Elasticsearch
Service

Elasticsearch

Search and analytics engine

:9200 :9300 4 guides 4 phases
1 min read Updated: Jul 14, 2026

What is Elasticsearch?

Elasticsearch is a distributed search and analytics engine, often used for logs and full-text search.

Common security issues

  • No authentication or TLS.

  • Exposed REST API.

  • Data leaks or indexing sensitive data.

  • Remote code execution via scripting.

  • Snapshot repository abuse.

Default ports

  • 9200 – REST API

  • 9300 – internal node communication

Enumeration

Covers REST API enum of auth, version, cluster, indices, mappings

1

Vulnerability Discovery

Guides for finding unauth access and exposed indices in Elasticsearch

1

Exploitation

RCE via Groovy script injection and sandbox escape on 1.x/2.x

1

Data Exfiltration

Extract data from open Elasticsearch via scroll API and bulk export

1