A malicious extension could have called <code>browser.identity.launchWebAuthFlow</code>, controlling the redirect_uri, and through the Promise returned, obtain the Auth code and gain access to the user’s account at the service provider. This vulnerability affects Firefox < 75.
[
{
"product": "Firefox",
"vendor": "Mozilla",
"versions": [
{
"lessThan": "75",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
}
]