Confluence 2.9.2 is a recommended upgrade which fixes some security flaws as well as other bugs. You'll find details of the fixes in the release notes.

Upgrade Procedure

If you are already running a version of Confluence, please follow these instructions to upgrade to the latest version:

1. Before you upgrade, we strongly recommend that you back up your confluence.home directory and database.
   
   
2. If your version of Confluence is earlier than 2.9.0, read the release notes and upgrade guides for all releases between your version and the latest version. In particular:
   • Please read the 2.9 upgrade notes and the 2.9.1 upgrade notes.
   • If you are upgrading from 2.1 or earlier, please also read the 2.2 release notes.
     
     
3. Download the latest version of Confluence.
   
   
4. Follow the instructions in the Upgrade Guide.