A <dialog> element could have been manipulated to paint content outside of a sandboxed iframe. This could allow untrusted content to display under the guise of trusted content. This vulnerability affects Firefox < 121.
{
"availability": "No subscription required",
"binaries": [
{
"binary_version": "121.0+build1-0ubuntu0.20.04.1",
"binary_name": "firefox"
},
{
"binary_version": "121.0+build1-0ubuntu0.20.04.1",
"binary_name": "firefox-dev"
},
{
"binary_version": "121.0+build1-0ubuntu0.20.04.1",
"binary_name": "firefox-geckodriver"
},
{
"binary_version": "121.0+build1-0ubuntu0.20.04.1",
"binary_name": "firefox-mozsymbols"
}
]
}