Joomla 2.5.10 has been released.
Notable in this build is the inclusion 7 low and medium priority security patches for information disclosure, XSS, DOS and privilege escalation vulnerabilities affecting versions 2.5.9 and earlier versions of 2.5.
38 items from the bug tracker were also addressed.
Full details can be found in the official 2.5.10 release announcement at joomla.org
Since this release improves security, we recommend that all users perform an Joomla upgrade immediately.
A Joomla upgrade can be performed directly in the Joomla administrative backend. For users with multiple sites, we recommend updating all your sites from Watchful.li — a centralized site manager for Joomla.