Multiple vulnerabilities have been announced for Apple Quicktime. I counted 11 different vulnerabilities in the advisory, ranging in criticality from disclosure of personal information to buffer overflows. Apple has released an update, version 7.4.5, that fixes these vulnerabilities.
Opera versions prior to 9.27 are vulnerable to multiple issues. These vulnerabilities could allow for the execution of code on the local host. Users should update to version 9.27.
Multiple vulnerabilities in the Opera web browser have been reported. These vulnerabilities could allow for the execution of arbitrary script code, conduct cross site scripting, force a user to upload files, and bypass security restrictions. These vulnerabilities are reported in versions prior to 9.26. Version 9.26 is available at the time of this writing. Anyone using this software should upgrade as soon as possible.