Phoenix : The Joomla Project announces the immediate availability of Joomla 1.5.26. This is a security release. The Production Leadership Team's goal is to continue to provide regular, frequent updates to the Joomla community. Learn more about Joomla! Development at the Developer Site.
Check the Joomla 1.5.26 Post-Release FAQs to see if there are important items and helpful hints discovered after the release.
High Priority - Core - Password Change Vulnerability.
Low Priority - Core - Information Disclosure.