Heap-based buffer overflow in Opera 9.0 and 9.01 allows remote attackers to execute arbitrary code via a long URL in a tag (long link address).
https://exchange.xforce.ibmcloud.com/vulnerabilities/29632
http://www.vupen.com/english/advisories/2006/4066
http://www.securityfocus.com/bid/20591
http://www.opera.com/support/search/supsearch.dml?index=848
http://www.novell.com/linux/security/advisories/2006_61_opera.html
http://www.kb.cert.org/vuls/id/484380
http://securitytracker.com/id?1017080
http://secunia.com/advisories/22509
http://secunia.com/advisories/22218
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=424