Moodle before 1.6.2, when the configuration lacks (1) algebra or (2) tex filters, allows remote authenticated users to write LaTeX or MimeTeX output files to the top level of the dataroot directory via (a) filter/algebra/pix.php or (b) filter/tex/pix.php.

course/jumpto.php in Moodle before 1.6.2 does not validate the session key (sesskey) before providing content from arbitrary local URIs, which allows remote attackers to obtain sensitive information via the jump parameter.

The Database module in Moodle before 1.6.2 does not properly handle uploaded files, which has unspecified impact and remote attack vectors.

backup/backup_scheduled.php in Moodle before 1.6.2 generates trace data with the full backup pathname even when debugging is disabled, which might allow attackers to obtain the pathname.

lib/setup.php in Moodle before 1.6.2 sets the error reporting level to 7 to display E_WARNING messages to users even if debugging is disabled, which might allow remote authenticated users to obtain sensitive information by triggering the messages.