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Mozilla Foundation Security Advisory 2007-20
Title: Frame spoofing while window is loading
Announced: July 17, 2007
Reporter: Ronen Zilberman and Michal Zalewski
Fixed in: Firefox 126.96.36.199
Ronen Zilberman and Michal Zalewski both reported that it was possible to exploit a timing issue to inject content into about:blank frames in a page. When opening a window from a script, it is possible to spoof the content of the newly opened window's frames within a short time frame, while the window is loading.