We have released Search Guard 5.3.2-12, compatible with Elasticsearch 5.3.2, alongside with Search Guard 2.4.5-12, compatible with Elasticsearch 2.4.5.
A new version of the Kibana plugin is also available:
https://github.com/floragunncom/search-guard-kibana-plugin/releases/tag/v5.3.2-2
The new releases are enjoyed best with this song 
https://www.youtube.com/watch?v=UKlG351Lc_4
Jochen and the Search Guard team
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Search Guard (®) is an Elasticsearch plugin that offers encryption, authentication, and authorization.
It builds on Search Guard SSL and provides pluggable auth/auth modules in addition.