CHXO Feedsplitter 2006-01-21 allows remote attackers to read the source code of feedsplitter.php via the showsource function. NOTE: this issue is not a vulnerability in standard distributions, but could be an issue if the source has been modified.
http://www.securityfocus.com/bid/19779
http://www.securityfocus.com/archive/1/444805/100/0/threaded