membership.asp in Mini-Nuke CMS System 1.8.2 and earlier does not verify the old password when changing a password, which allows remote attackers to change the passwords of other members via a lostpassnew action with a modified x parameter.
https://exchange.xforce.ibmcloud.com/vulnerabilities/24101
http://www.vupen.com/english/advisories/2006/0173
http://www.securityfocus.com/archive/1/421748/100/0/threaded