description: Permission prompts for opening external schemes were only shown for <code>ContentPrincipals</code> resulting in extensions being able to open them without user interaction via <code>ExpandedPrincipals</code>. This could lead to further malicious actions such as downloading files or interacting with software already installed on the system. This vulnerability affects Firefox < 110, Thunderbird < 102.8, and Firefox ESR < 102.8.
problem types: Extensions could have opened external schemes without user knowledge
affected:
{
vendor: Mozilla
product: Firefox
versions:
version: unspecified, lessThan: 110, status: affected, versionType: custom
}
{
vendor: Mozilla
product: Thunderbird
versions:
version: unspecified, lessThan: 102.8, status: affected, versionType: custom
}
{
vendor: Mozilla
product: Firefox ESR
versions:
version: unspecified, lessThan: 102.8, status: affected, versionType: custom
}
