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caddyhttp: Limit empty Host check to HTTP/1.1

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Matthew Holt 2026-02-27 10:22:39 -07:00
parent 72eaf2583a
commit eac02ee98f
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1 changed files with 1 additions and 1 deletions
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modules/caddyhttp/server.go
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@ -486,7 +486,7 @@ func (s *Server) serveHTTP(w http.ResponseWriter, r *http.Request) error {
// code to any HTTP/1.1 request message that lacks a Host header field and to any
// request message that contains more than one Host header field line or a Host
// header field with an invalid field value."
if r.Host == "" {
if r.ProtoMajor == 1 && r.ProtoMinor == 1 && r.Host == "" {
return HandlerError{
Err: errors.New("rfc9112 forbids empty Host"),
StatusCode: http.StatusBadRequest,