HTTP headers were not properly parsed, which allows remote attackers to conduct HTTP request smuggling attacks via a request that contains Content-Length and Transfer-Encoding header fields.
go.dev/cl/11772
go.dev/cl/11810
go.dev/cl/12865
go.dev/cl/13148
go.dev/issue/11930
go.dev/issue/12027
go.googlesource.com/go/+/117ddcb83d7f42d6aa72241240af99ded81118e9
go.googlesource.com/go/+/26049f6f9171d1190f3bbe05ec304845cfe6399f
go.googlesource.com/go/+/300d9a21583e7cf0149a778a0611e76ff7c6680f
go.googlesource.com/go/+/c2db5f4ccc61ba7df96a747e268a277b802cbb87
groups.google.com/g/golang-announce/c/iSIyW4lM4hY/m/ADuQR4DiDwAJ