Cross-site scripting (XSS) vulnerability in phpCOIN 1.2.0 through 1.2.1b allows remote attackers to inject arbitrary web script or HTML via (1) the new parameter to mod.php, (2) the w parameter to mod.php, (3) the e parameter to login.php, (4) the o parameter to login.php, and possibly other scripts.
https://exchange.xforce.ibmcloud.com/vulnerabilities/19572
http://lostmon.blogspot.com/2005/03/phpcoin-posible-sql-injection-comands.html
http://forums.phpcoin.com/index.php?showtopic=4118