WebKit does not properly restrict focus changes, which allows remote attackers to read keystrokes via "cross-domain IFRAME gadgets," a different vulnerability than CVE-2010-1126, CVE-2010-1422, and CVE-2010-2295.

page/EventHandler.cpp in WebCore in WebKit in Google Chrome before 5.0.375.70 does not properly handle a change of the focused frame during the dispatching of keydown, which allows user-assisted remote attackers to redirect keystrokes via a crafted HTML document, aka rdar problem 7018610. NOTE: this might overlap CVE-2010-1422.

WebKit in Apple Safari before 5.0 on Mac OS X 10.5 through 10.6 and Windows, and before 4.1 on Mac OS X 10.4, does not properly handle changes to keyboard focus that occur during processing of key press events, which allows remote attackers to force arbitrary key presses via a crafted HTML document.