WordPress 2.2.x and 2.3.x allows remote attackers to obtain sensitive information via an invalid p parameter in an rss2 action to the default URI, which reveals the full path and the SQL database structure.
https://exchange.xforce.ibmcloud.com/vulnerabilities/39423
http://www.securityfocus.com/archive/1/485786/100/0/threaded
http://websecurity.com.ua/1634/
http://securityvulns.ru/Sdocument663.html
http://securityreason.com/securityalert/3539
http://lists.grok.org.uk/pipermail/full-disclosure/2008-January/059439.html