If you notice any accidental or malicious TeX, HTML or other formatting that can cause problems, please let us know.
This page will document potential problems.
TeX issues
TeX command "write18" executes arbitrary commands. Make sure it is disabled (such as in texmf.cnf) with shell_escape.
Input of arbritary files (like passwd).
openout_any and openin_any
Generating of latex source from this will check for existing tex.