When a JavaScript URL (javascript:) is evaluated and the result is a string, this string is parsed to create an HTML document, which is then presented. Previously, this document’s URL (as reported by the document.location property, for example) was the originating javascript: URL which could lead to spoofing attacks; it is now correctly the URL of the originating document. This vulnerability affects Firefox < 74.
[
{
"product": "Firefox",
"vendor": "Mozilla",
"versions": [
{
"lessThan": "74",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
}
]