The WordPress project has just released a new version due to a security release. WordPress versions 4.2.3 and earlier are affected by six issues, including three cross-site scripting vulnerabilities and a potential SQL injection that could be used to compromise a site. It also includes a fix for a potential timing side-channel attack and prevents an attacker from locking a post from being edited. In addition to the security fixes, WordPress 4.2.4 contains fixes for 4 bugs from 4.2.3. You can find more information at the Release Notes.
The WordPress team strongly encourages their users to update their site to this version. For more details please check the official announcement. If you already have a running version of Bitnami WordPress, the application will be automatically updated. You can confirm that the update has been done by checking the version from your admin panel.