description: Through a series of navigations, Firefox could have entered fullscreen mode without notification or warning to the user. This could lead to spoofing attacks on the browser UI including phishing. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.
problem types: Firefox could be coaxed into going into fullscreen mode without notification or warning
affected:
{
product: Firefox
vendor: Mozilla
versions:
lessThan: 94, status: affected, version: unspecified, versionType: custom
}
{
product: Thunderbird
vendor: Mozilla
versions:
lessThan: 91.3, status: affected, version: unspecified, versionType: custom
}
{
product: Firefox ESR
vendor: Mozilla
versions:
lessThan: 91.3, status: affected, version: unspecified, versionType: custom
}
