Opera before 9.52 does not properly restrict the ability of a framed web page to change the address associated with a different frame, which allows remote attackers to trigger the display of an arbitrary address in a frame via unspecified use of web script.
Gentoo Linux Security Advisory GLSA 200811-01 - Multiple vulnerabilities have been discovered in Opera, allowing for the execution of arbitrary code. Versions below 9.62 are affected.