All versions of Node.js 8.x, 9.x, and 10.x are vulnerable and the severity is HIGH. An attacker can cause a denial of service (DoS) by causing a node server providing an http2 server to crash. This can be accomplished by interacting with the http2 server in a manner that triggers a cleanup bug where objects are used in native code after they are no longer available. This has been addressed by updating the http2 implementation.
{
"versions": [
{
"introduced": "8.0.0"
},
{
"last_affected": "8.8.1"
},
{
"introduced": "8.9.0"
},
{
"fixed": "8.11.3"
},
{
"introduced": "9.0.0"
},
{
"fixed": "9.11.2"
},
{
"introduced": "10.0.0"
},
{
"fixed": "10.4.1"
}
]
}