The HTTP Alternative Services header, Alt-Svc, can be used by a malicious site to scan all TCP ports of any host that the accessible to a user when web content is loaded. This vulnerability affects Firefox < 68.
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-11728.json"
[
{
"events": [
{
"introduced": "0"
},
{
"fixed": "68.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "15.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "15.1"
}
]
}
]