CRLF injection vulnerability in Drupal 4.5.x before 4.5.8 and 4.6.x before 4.5.8 allows remote attackers to inject headers of outgoing e-mail messages and use Drupal as a spam proxy.
drupal.org/node/53806
secunia.com/advisories/19245
secunia.com/advisories/19257
securityreason.com/securityalert/579
www.debian.org/security/2006/dsa-1007
www.osvdb.org/23912
www.securityfocus.com/archive/1/427591/100/0/threaded
www.securityfocus.com/bid/17104
exchange.xforce.ibmcloud.com/vulnerabilities/25206