The symfony core team released new versions of three branches (1.2, 1.3 and 1.4) fixing a security vulnerability in the Doctrine admin generator. The new versions are 1.2.12, 1.3.3 and 1.4.3.
All our servers have been upgraded but if you are using the admin generator in your site, it is important that you clear the symfony cache. On shared hosting you can do so by login to the Control Panel and using Maestro. On a VPS, through SSH and as root run the following command: “cd /usr/local/php; git pull” and then clear your symfony cache.