H2O version 2.2.3 and earlier allows remote attackers to cause a denial of service in the server via specially crafted HTTP/2 header.
[
{
"product": "H2O",
"vendor": "Kazuho Oku",
"versions": [
{
"status": "affected",
"version": "version 2.2.3 and earlier"
}
]
}
]