WebExtensions can use request redirection and a “filterReponseData” filter to bypass host permission settings to redirect network traffic and access content from a host for which they do not have explicit user permission. This vulnerability affects Firefox < 60.
[
{
"product": "Firefox",
"vendor": "Mozilla",
"versions": [
{
"lessThan": "60",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
}
]