phpMyFAQ 2.6.11 and 2.6.12, as distributed between December 4th and December 15th 2010, contains an externally introduced modification (Trojan Horse) in the getTopTen method in inc/Faq.php, which allows remote attackers to execute arbitrary PHP code.
http://www.vupen.com/english/advisories/2010/3254
http://www.securityfocus.com/bid/45442