Next.js 7.0.0 and 7.0.1 has XSS via the 404 or 500 /_error page.
{
"versions": [
{
"introduced": "0"
},
{
"last_affected": "7.0.0"
},
{
"introduced": "0"
},
{
"last_affected": "7.0.1"
}
]
}