The “browser.identity.launchWebAuthFlow” function of WebExtensions is only allowed to load content over “https:” but this requirement was not properly enforced. This can potentially allow privileged pages to be loaded by the extension. This vulnerability affects Firefox < 58.
[
{
"product": "Firefox",
"vendor": "Mozilla",
"versions": [
{
"lessThan": "58",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
}
]