Absolute path traversal vulnerability in download.php in the Count Per Day module before 3.1.1 for WordPress allows remote attackers to read arbitrary files via the f parameter.
https://exchange.xforce.ibmcloud.com/vulnerabilities/72385
http://www.securityfocus.com/bid/51402
http://wordpress.org/extend/plugins/count-per-day/changelog/
http://secunia.com/advisories/47529
http://plugins.trac.wordpress.org/changeset/488883/count-per-day