Release the RAVEN: Kibana Under Siege

August 13, 2026 · LevelBlue SpiderLabs · Severity: CRITICAL

Attackers target Kibana, the visualization interface for Elasticsearch, on port 5601, exploiting its API surface, plugin architecture, and history of critical vulnerabilities. This follows previous parts focusing on Elasticsearch attacks.

In Parts 1 and 2, every command targeted port 9200. Every exploit, every reconnaissance query, every credential test hit the Elasticsearch REST API directly. But Elasticsearch rarely operates alone. Sitting alongside it on most deployments is Kibana, the visualization and management interface, quietly serving dashboards on port 5601 with its own API surface, plugin architecture, and history of critical vulnerabilities.

Key Takeaways

Attackers target Kibana on port 5601 with its own API and vulnerabilities.
Kibana's plugin architecture expands attack surface beyond Elasticsearch.
Previous parts covered Elasticsearch attacks; now focus shifts to Kibana.