Style editor traffic in the Developer Tools can be routed through a service worker hosted on a third party website if a user selects error links when these tools are open. This can allow style editor information used within Developer Tools to leak cross-origin. This vulnerability affects Firefox < 58.
[
{
"product": "Firefox",
"vendor": "Mozilla",
"versions": [
{
"lessThan": "58",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
}
]