description: WebExtensions may use "view-source:" URLs to view local "file:" URL content, as well as content stored in "about:cache", bypassing restrictions that only allow WebExtensions to view specific content. This vulnerability affects Firefox < 59.
problem types: WebExtensions may use view-source: URLs to bypass content restrictions
affected:
{
product: Firefox
vendor: Mozilla
versions:
lessThan: 59, status: affected, version: unspecified, versionType: custom
}