When exiting fullscreen mode, an iframe could have confused the browser about the current state of fullscreen, resulting in potential user confusion or spoofing attacks. This vulnerability affects Thunderbird < 91.10, Firefox < 101, and Firefox ESR < 91.10.
CPE | Name | Operator | Version |
---|---|---|---|
firefox | lt | 101 | |
firefox_esr | lt | 91.10 | |
thunderbird | lt | 91.10 |