Special “about:” pages used by web content, such as RSS feeds, can load privileged “about:” pages in an iframe. If a content-injection bug were found in one of those pages this could allow for potential privilege escalation. This vulnerability affects Firefox < 51.
[
{
"product": "Firefox",
"vendor": "Mozilla",
"versions": [
{
"lessThan": "51",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
}
]