WordPress 3.6.1 is now available and fixes 3 security issues. Please update your WordPress site as soon as possible. Keeping your site’s software updated is an extremely important part of your security strategy.
The Joomla Project has made available a security release (i.e. it addresses security issues in the Joomla core software). If you have a Joomla website, then you should keep the Joomla core software up to date – particularly if it addresses security issues. This helps protect your website against security issues like malware, viruses and hackers. See this link for details on the release: