Elasticsearch 2.3.3, based on Lucene 5.5.0, has been released as a bug fix update, urging all users of version 2.3.x to upgrade due to several important fixes and improvements. Notable changes include the resolution of a JVM crash issue when reading completion stats on a closed index reader, improved CORS handling for same origin requests with HTTP compression, and the refinement of wildcard usage for field highlighting to prevent exceptions with geo fields. Additionally, geo-shape CONTAINS relationships are now functioning correctly, and thread local leaks in certain web containers have been addressed. The Marvel component no longer logs exceptions for temporarily empty node stats, and a deprecated Shield REST endpoint has been updated. Users are encouraged to download the updated version, test it, and provide feedback through social media or the GitHub issues page.