Opera Multiple Vulnerabilities

Multiple vulnerabilities have been reported in Opera, which can be exploited by malicious people to conduct spoofing attacks, bypass certain security restrictions, and potentially compromise a user's system.

1. An error when displaying the download dialog box within a small window can be exploited to download and execute a file by tricking a user into entering a specific keyboard sequence.
2. An error when displaying the download dialog box can be exploited to overlay the box with other content subsequently tricking a user into downloading and executing a file.
3. An error when handling history.state of sites implementing history.pushState and history.replaceState can be exploited to bypass the cross-domain policy restriction and disclose certain information to other sites.
4. An error when displaying certain dialogs can be exploited to display arbitrary content while showing the URL of a trusted web site in the address bar.
5. An error when handling redirects to a slowly responding, trusted site can be exploited to display arbitrary content while showing the URL of a trusted web site in the address bar.