Tabbed Browsers Can Disclose Confidential Info: "Among the affected browsers are Mozilla 1.7.2 and 1.7.3, Firefox 0.10.1, Opera 6.x and Opera 7.x, Safari 1.x, Netscape 7.x, and Konqueror 3.x.
Some of the flawed browsers have already been repaired or will be fixed shortly. Konqueror, for instance, closed the vulnerability in the version shipped with KDE 3.3.1, while the newest versions of the Mozilla/Firefox browsers have been patched against the second of the vulnerabilities. Opera said it will correct the issue in the upcoming version 7.60 (the current version of Opera is 7.54).
According to Secunia, users should either disable JavaScript within their browsers, or not visit trusted Web sites--such as financial institutions or retail sites--when tabs showing untrusted sites are also open. "