QuoteSecunia Research has discovered two vulnerabilities in the Opera Mail client, which can be exploited by a malicious person to conduct script insertion attacks and to spoof the name of attached files.
http://secunia.com/advisories/16645/
The Secunia advisory has recently been updated and according to information from the vendor this issue can be solved by updating to
Opera version 8.50 (http://www.opera.com/download/).
The vulnerabilities have been confirmed in Opera version 8.02, and prior versions may also be vulnerable.
Jason ;)