It was possible to cause the browser to enter fullscreen mode without displaying the security UI; thus making it possible to attempt a phishing attack or otherwise confuse the user. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5.
CPE | Name | Operator | Version |
---|---|---|---|
firefox | lt | 83.0 | |
firefox_esr | lt | 78.5 | |
thunderbird | lt | 78.5 |