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.
2022-12-22T20:15:28.373
2025-04-16T14:15:21.623
Modified
CVSSv3.1: 6.5 (MEDIUM)
Type | Vendor | Product | Version/Range | Vulnerable? |
---|---|---|---|---|
Application | mozilla | firefox | < 101 | Yes |
Application | mozilla | firefox_esr | < 91.10 | Yes |
Application | mozilla | thunderbird | < 91.10 | Yes |