Opera before 9.0 does not reset the SSL security bar after displaying a download dialog from an SSL-enabled website, which allows remote attackers to spoof a trusted SSL certificate from an untrusted website and facilitates phishing attacks.
secunia.com/advisories/19480
secunia.com/advisories/20897
secunia.com/secunia_research/2006-49/advisory/
securityreason.com/securityalert/1177
securitytracker.com/id?1016406
www.novell.com/linux/security/advisories/2006_38_opera.html
www.securityfocus.com/archive/1/438634/100/0/threaded
www.securityfocus.com/bid/18692
www.vupen.com/english/advisories/2006/2571
exchange.xforce.ibmcloud.com/vulnerabilities/27449