When navigating from inside an iframe while requesting fullscreen access, an attacker-controlled tab could have made the browser unable to leave fullscreen mode. This vulnerability affects Firefox ESR < 91.5, Firefox < 96, and Thunderbird < 91.5.
CPE | Name | Operator | Version |
---|---|---|---|
firefox | lt | 96.0 | |
firefox_esr | lt | 91.5 | |
thunderbird | lt | 91.5 |