Acceptance of some invalid Transfer-Encoding headers in the HTTP/1 client in net/http before Go 1.17.12 and Go 1.18.4 allows HTTP request smuggling if combined with an intermediate server that also improperly fails to reject the header as invalid.
{
"versions": [
{
"introduced": "0"
},
{
"fixed": "1.17.12"
},
{
"introduced": "1.18.0"
},
{
"fixed": "1.18.4"
}
]
}