Drupal 4.6.x before 4.6.10 and 4.7.x before 4.7.4 allows form submissions to be redirected, which allows remote attackers to obtain arbitrary form information via a crafted URL.
drupal.org/node/88828
secunia.com/advisories/22486
securityreason.com/securityalert/1764
www.openpkg.org/security/advisories/OpenPKG-SA-2006.025-drupal.html
www.securityfocus.com/archive/1/449200/100/0/threaded
www.securityfocus.com/bid/20631
www.vupen.com/english/advisories/2006/4120
exchange.xforce.ibmcloud.com/vulnerabilities/29682