description: When a Web Extension had the all-urls permission and made a fetch request with a mode set to 'same-origin', it was possible for the Web Extension to read local files. This vulnerability affects Firefox < 74.
problem types: Web Extensions with the all-urls permission could access local files
affected:
{
product: Firefox
vendor: Mozilla
versions:
lessThan: 74, status: affected, version: unspecified, versionType: custom
}