Archangel Weblog 0.90.02 allows remote attackers to bypass authentication by setting the ba_admin cookie to 1.
https://www.exploit-db.com/exploits/3859
https://exchange.xforce.ibmcloud.com/vulnerabilities/24984
http://www.securityfocus.com/bid/16848
http://www.securityfocus.com/archive/1/426184/100/0/threaded