Leif M. Wright's Blog 3.5 does not make a password comparison when authenticating an administrator via a cookie, which allows remote attackers to bypass login authentication, probably by setting the blogAdmin cookie.
https://exchange.xforce.ibmcloud.com/vulnerabilities/24755
http://www.securityfocus.com/bid/16714
http://www.evuln.com/vulns/82/summary.html