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.
Name | Vendor | Start Version | End Version |
---|---|---|---|
Firefox | Mozilla | * | 96.0 (excluding) |
Firefox_esr | Mozilla | * | 91.5 (excluding) |
Thunderbird | Mozilla | * | 91.5 (excluding) |