Last week we released on Bugtraq and FD an advisory about a remote command execution in Moodle 1.9.3. Unluckily the vendor refused to issue a security release to allow an easy fix of the problem since there are too many issues related to register_globals On in Moodle. We strongly advise end users to manually disable the vulnerable code removing the file "filter/tex/texed.php" ad exploits are emerging in the wild.