Today, the Joomla core team release Joomla 1.5.4, this is just a normal maintainance release. This version will fix several issues including some minor security issues, bug fixes and add more echancements.

Security Issues Fixed

• Added security to file caching to prevent unauthorized access to cached pages
• User Redirect Spam fix
• htaccess global variable security fix when SEF is enabled

List of All the Bug Fixed

• Major Cache overhaul, including unit testing for quality assurance
• Router issues related to extending the router
• Menu ordering issues when nested menus were used
• Several Search component fixes, including the removal of HTML tags as possible search results
• Menu permissions issues
• Unpublished menu item issues, including fatal errors and allowing an unpublished menu item to be selected as default
• Banners can handle Flash items
• Polls and Latest and Most Popular articles listed in the Administrator now support GMT dates
• Page titles now follow more consistent rules (see Page Title Parameters for more information)
• Several OpenID improvements

If you’re using Joomla 1.5, it’s time for you to upgrade to Joomla 1.54. You can download it from here.

More infos are available on http://www.joomla.org