The fullscreen notification is prematurely hidden when fullscreen is re-requested quickly by the user. This could have been leveraged to perform a potential spoofing attack. This vulnerability affects Firefox < 135 and Thunderbird < 135.
{
"availability": "No subscription required",
"binaries": [
{
"binary_name": "firefox",
"binary_version": "135.0+build2-0ubuntu0.20.04.1"
},
{
"binary_name": "firefox-dev",
"binary_version": "135.0+build2-0ubuntu0.20.04.1"
},
{
"binary_name": "firefox-geckodriver",
"binary_version": "135.0+build2-0ubuntu0.20.04.1"
},
{
"binary_name": "firefox-mozsymbols",
"binary_version": "135.0+build2-0ubuntu0.20.04.1"
}
]
}