When a network error occurred during page load, the prior content could have remained in view with a blank URL bar. This could have been used to obfuscate a spoofed web site. This vulnerability affects Firefox < 126.
{
"binaries": [
{
"binary_version": "126.0+build2-0ubuntu0.20.04.1",
"binary_name": "firefox"
},
{
"binary_version": "126.0+build2-0ubuntu0.20.04.1",
"binary_name": "firefox-dev"
},
{
"binary_version": "126.0+build2-0ubuntu0.20.04.1",
"binary_name": "firefox-geckodriver"
},
{
"binary_version": "126.0+build2-0ubuntu0.20.04.1",
"binary_name": "firefox-mozsymbols"
}
],
"availability": "No subscription required"
}