In Reader View SameSite cookie protections are not checked on exiting. This allows for a payload to be triggered when Reader View is exited if loaded by a malicious site while Reader mode is active, bypassing CSRF protections. This vulnerability affects Firefox < 61.
[
{
"product": "Firefox",
"vendor": "Mozilla",
"versions": [
{
"lessThan": "61",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
}
]