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Double flow control refund on HTTP/2 server streams in net/http

Exact source revision recorded 23 Oct 2026 15:48:27 UTC. It does not establish the source's current position. Latest evidence.

cve-program · CVE-2026-78663

Published

net/http

https://pkg.go.dev

Original vendor version evidence · not evaluated as a NuGet range
{
                    "vendor": "Go standard library",
                    "product": "net/http",
                    "collectionURL": "https://pkg.go.dev",
                    "packageName": "net/http",
                    "versions": [
                        {
                            "version": "0",
                            "lessThan": "1.26.9",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ],
                    "programRoutines": [
                        {
                            "name": "http2requestBody.Close"
                        },
                        {
                            "name": "http2requestBody.Read"
                        },
                        {
                            "name": "http2serverConn.closeStream"
                        },
                        {
                            "name": "http2serverConn.handlerDone"
                        },
                        {
                            "name": "http2serverConn.newWriterAndRequest"
                        },
                        {
                            "name": "http2serverConn.newWriterAndRequestNoBody"
                        },
                        {
                            "name": "http2serverConn.noteBodyRead"
                        },
                        {
                            "name": "http2serverConn.processHeaders"
                        },
                        {
                            "name": "http2serverConn.runHandler"
                        },
                        {
                            "name": "http2serverConn.scheduleHandler"
                        },
                        {
                            "name": "CanonicalHeaderKey"
                        },
                        {
                            "name": "Client.CloseIdleConnections"
                        },
                        {
                            "name": "Client.Do"
                        },
                        {
                            "name": "Client.Get"
                        },
                        {
                            "name": "Client.Head"
                        },
                        {
                            "name": "Client.Post"
                        },
                        {
                            "name": "Client.PostForm"
                        },
                        {
                            "name": "ClientConn.Close"
                        },
                        {
                            "name": "ClientConn.RoundTrip"
                        },
                        {
                            "name": "Cookie.String"
                        },
                        {
                            "name": "Cookie.Valid"
                        },
                        {
                            "name": "CrossOriginProtection.AddInsecureBypassPattern"
                        },
                        {
                            "name": "CrossOriginProtection.AddTrustedOrigin"
                        },
                        {
                            "name": "CrossOriginProtection.Check"
                        },
                        {
                            "name": "Dir.Open"
                        },
                        {
                            "name": "Error"
                        },
                        {
                            "name": "Get"
                        },
                        {
                            "name": "Handle"
                        },
                        {
                            "name": "HandleFunc"
                        },
                        {
                            "name": "HandlerFunc.ServeHTTP"
                        },
                        {
                            "name": "Head"
                        },
                        {
                            "name": "Header.Add"
                        },
                        {
                            "name": "Header.Del"
                        },
                        {
                            "name": "Header.Get"
                        },
                        {
                            "name": "Header.Set"
                        },
                        {
                            "name": "Header.Values"
                        },
                        {
                            "name": "Header.Write"
                        },
                        {
                            "name": "Header.WriteSubset"
                        },
                        {
                            "name": "ListenAndServe"
                        },
                        {
                            "name": "ListenAndServeTLS"
                        },
                        {
                            "name": "NewRequest"
                        },
                        {
                            "name": "NewRequestWithContext"
                        },
                        {
                            "name": "NotFound"
                        },
                        {
                            "name": "ParseCookie"
                        },
                        {
                            "name": "ParseSetCookie"
                        },
                        {
                            "name": "ParseTime"
                        },
                        {
                            "name": "Post"
                        },
                        {
                            "name": "PostForm"
                        },
                        {
                            "name": "ProxyFromEnvironment"
                        },
                        {
                            "name": "ReadRequest"
                        },
                        {
                            "name": "ReadResponse"
                        },
                        {
                            "name": "Redirect"
                        },
                        {
                            "name": "Request.AddCookie"
                        },
                        {
                            "name": "Request.BasicAuth"
                        },
                        {
                            "name": "Request.Cookie"
                        },
                        {
                            "name": "Request.Cookies"
                        },
                        {
                            "name": "Request.CookiesNamed"
                        },
                        {
                            "name": "Request.FormFile"
                        },
                        {
                            "name": "Request.FormValue"
                        },
                        {
                            "name": "Request.MultipartReader"
                        },
                        {
                            "name": "Request.ParseForm"
                        },
                        {
                            "name": "Request.ParseMultipartForm"
                        },
                        {
                            "name": "Request.PostFormValue"
                        },
                        {
                            "name": "Request.Referer"
                        },
                        {
                            "name": "Request.SetBasicAuth"
                        },
                        {
                            "name": "Request.UserAgent"
                        },
                        {
                            "name": "Request.Write"
                        },
                        {
                            "name": "Request.WriteProxy"
                        },
                        {
                            "name": "Response.Cookies"
                        },
                        {
                            "name": "Response.Location"
                        },
                        {
                            "name": "Response.Write"
                        },
                        {
                            "name": "ResponseController.EnableFullDuplex"
                        },
                        {
                            "name": "ResponseController.Flush"
                        },
                        {
                            "name": "ResponseController.Hijack"
                        },
                        {
                            "name": "ResponseController.SetReadDeadline"
                        },
                        {
                            "name": "ResponseController.SetWriteDeadline"
                        },
                        {
                            "name": "Serve"
                        },
                        {
                            "name": "ServeContent"
                        },
                        {
                            "name": "ServeFile"
                        },
                        {
                            "name": "ServeFileFS"
                        },
                        {
                            "name": "ServeMux.Handle"
                        },
                        {
                            "name": "ServeMux.HandleFunc"
                        },
                        {
                            "name": "ServeMux.ServeHTTP"
                        },
                        {
                            "name": "ServeTLS"
                        },
                        {
                            "name": "Server.Close"
                        },
                        {
                            "name": "Server.ListenAndServe"
                        },
                        {
                            "name": "Server.ListenAndServeTLS"
                        },
                        {
                            "name": "Server.Serve"
                        },
                        {
                            "name": "Server.ServeTLS"
                        },
                        {
                            "name": "Server.SetKeepAlivesEnabled"
                        },
                        {
                            "name": "Server.Shutdown"
                        },
                        {
                            "name": "SetCookie"
                        },
                        {
                            "name": "Transport.CancelRequest"
                        },
                        {
                            "name": "Transport.Clone"
                        },
                        {
                            "name": "Transport.CloseIdleConnections"
                        },
                        {
                            "name": "Transport.NewClientConn"
                        },
                        {
                            "name": "Transport.RoundTrip"
                        },
                        {
                            "name": "body.Close"
                        },
                        {
                            "name": "body.Read"
                        },
                        {
                            "name": "bodyEOFSignal.Close"
                        },
                        {
                            "name": "bodyEOFSignal.Read"
                        },
                        {
                            "name": "bodyLocked.Read"
                        },
                        {
                            "name": "bufioFlushWriter.Write"
                        },
                        {
                            "name": "cancelTimerBody.Close"
                        },
                        {
                            "name": "cancelTimerBody.Read"
                        },
                        {
                            "name": "checkConnErrorWriter.Write"
                        },
                        {
                            "name": "chunkWriter.Write"
                        },
                        {
                            "name": "connReader.Read"
                        },
                        {
                            "name": "connectMethodKey.String"
                        },
                        {
                            "name": "expectContinueReader.Close"
                        },
                        {
                            "name": "expectContinueReader.Read"
                        },
                        {
                            "name": "extraHeader.Write"
                        },
                        {
                            "name": "fileHandler.ServeHTTP"
                        },
                        {
                            "name": "fileTransport.RoundTrip"
                        },
                        {
                            "name": "globalOptionsHandler.ServeHTTP"
                        },
                        {
                            "name": "gzipReader.Close"
                        },
                        {
                            "name": "gzipReader.Read"
                        },
                        {
                            "name": "http1ClientConn.Close"
                        },
                        {
                            "name": "http1ClientConn.RoundTrip"
                        },
                        {
                            "name": "http2ClientConn.Close"
                        },
                        {
                            "name": "http2ClientConn.Ping"
                        },
                        {
                            "name": "http2ClientConn.RoundTrip"
                        },
                        {
                            "name": "http2ClientConn.Shutdown"
                        },
                        {
                            "name": "http2ConnectionError.Error"
                        },
                        {
                            "name": "http2ErrCode.String"
                        },
                        {
                            "name": "http2FrameHeader.String"
                        },
                        {
                            "name": "http2FrameType.String"
                        },
                        {
                            "name": "http2FrameWriteRequest.String"
                        },
                        {
                            "name": "http2Framer.ReadFrame"
                        },
                        {
                            "name": "http2Framer.ReadFrameForHeader"
                        },
                        {
                            "name": "http2Framer.ReadFrameHeader"
                        },
                        {
                            "name": "http2Framer.WriteContinuation"
                        },
                        {
                            "name": "http2Framer.WriteData"
                        },
                        {
                            "name": "http2Framer.WriteDataPadded"
                        },
                        {
                            "name": "http2Framer.WriteGoAway"
                        },
                        {
                            "name": "http2Framer.WriteHeaders"
                        },
                        {
                            "name": "http2Framer.WritePing"
                        },
                        {
                            "name": "http2Framer.WritePriority"
                        },
                        {
                            "name": "http2Framer.WritePushPromise"
                        },
                        {
                            "name": "http2Framer.WriteRSTStream"
                        },
                        {
                            "name": "http2Framer.WriteRawFrame"
                        },
                        {
                            "name": "http2Framer.WriteSettings"
                        },
                        {
                            "name": "http2Framer.WriteSettingsAck"
                        },
                        {
                            "name": "http2Framer.WriteWindowUpdate"
                        },
                        {
                            "name": "http2GoAwayError.Error"
                        },
                        {
                            "name": "http2Server.ServeConn"
                        },
                        {
                            "name": "http2Setting.String"
                        },
                        {
                            "name": "http2SettingID.String"
                        },
                        {
                            "name": "http2SettingsFrame.ForeachSetting"
                        },
                        {
                            "name": "http2StreamError.Error"
                        },
                        {
                            "name": "http2Transport.CloseIdleConnections"
                        },
                        {
                            "name": "http2Transport.NewClientConn"
                        },
                        {
                            "name": "http2Transport.RoundTrip"
                        },
                        {
                            "name": "http2Transport.RoundTripOpt"
                        },
                        {
                            "name": "http2bufferedWriter.Flush"
                        },
                        {
                            "name": "http2bufferedWriter.Write"
                        },
                        {
                            "name": "http2bufferedWriterTimeoutWriter.Write"
                        },
                        {
                            "name": "http2chunkWriter.Write"
                        },
                        {
                            "name": "http2clientConnPool.GetClientConn"
                        },
                        {
                            "name": "http2connError.Error"
                        },
                        {
                            "name": "http2dataBuffer.Read"
                        },
                        {
                            "name": "http2duplicatePseudoHeaderError.Error"
                        },
                        {
                            "name": "http2gzipReader.Close"
                        },
                        {
                            "name": "http2gzipReader.Read"
                        },
                        {
                            "name": "http2headerFieldNameError.Error"
                        },
                        {
                            "name": "http2headerFieldValueError.Error"
                        },
                        {
                            "name": "http2netHTTPClientConn.Close"
                        },
                        {
                            "name": "http2netHTTPClientConn.RoundTrip"
                        },
                        {
                            "name": "http2noDialClientConnPool.GetClientConn"
                        },
                        {
                            "name": "http2noDialH2RoundTripper.NewClientConn"
                        },
                        {
                            "name": "http2noDialH2RoundTripper.RoundTrip"
                        },
                        {
                            "name": "http2pipe.Read"
                        },
                        {
                            "name": "http2priorityWriteSchedulerRFC7540.CloseStream"
                        },
                        {
                            "name": "http2priorityWriteSchedulerRFC7540.OpenStream"
                        },
                        {
                            "name": "http2priorityWriteSchedulerRFC9218.OpenStream"
                        },
                        {
                            "name": "http2pseudoHeaderError.Error"
                        },
                        {
                            "name": "http2responseWriter.Flush"
                        },
                        {
                            "name": "http2responseWriter.FlushError"
                        },
                        {
                            "name": "http2responseWriter.Push"
                        },
                        {
                            "name": "http2responseWriter.SetReadDeadline"
                        },
                        {
                            "name": "http2responseWriter.SetWriteDeadline"
                        },
                        {
                            "name": "http2responseWriter.Write"
                        },
                        {
                            "name": "http2responseWriter.WriteHeader"
                        },
                        {
                            "name": "http2responseWriter.WriteString"
                        },
                        {
                            "name": "http2roundRobinWriteScheduler.OpenStream"
                        },
                        {
                            "name": "http2serverConn.CloseConn"
                        },
                        {
                            "name": "http2serverConn.Flush"
                        },
                        {
                            "name": "http2stickyErrWriter.Write"
                        },
                        {
                            "name": "http2transportResponseBody.Close"
                        },
                        {
                            "name": "http2transportResponseBody.Read"
                        },
                        {
                            "name": "http2unencryptedTransport.RoundTrip"
                        },
                        {
                            "name": "http2writeData.String"
                        },
                        {
                            "name": "initALPNRequest.ServeHTTP"
                        },
                        {
                            "name": "loggingConn.Close"
                        },
                        {
                            "name": "loggingConn.Read"
                        },
                        {
                            "name": "loggingConn.Write"
                        },
                        {
                            "name": "maxBytesReader.Close"
                        },
                        {
                            "name": "maxBytesReader.Read"
                        },
                        {
                            "name": "onceCloseListener.Close"
                        },
                        {
                            "name": "persistConn.Read"
                        },
                        {
                            "name": "persistConnWriter.ReadFrom"
                        },
                        {
                            "name": "persistConnWriter.Write"
                        },
                        {
                            "name": "populateResponse.Write"
                        },
                        {
                            "name": "populateResponse.WriteHeader"
                        },
                        {
                            "name": "readTrackingBody.Close"
                        },
                        {
                            "name": "readTrackingBody.Read"
                        },
                        {
                            "name": "readWriteCloserBody.CloseWrite"
                        },
                        {
                            "name": "readWriteCloserBody.Read"
                        },
                        {
                            "name": "redirectHandler.ServeHTTP"
                        },
                        {
                            "name": "response.Flush"
                        },
                        {
                            "name": "response.FlushError"
                        },
                        {
                            "name": "response.Hijack"
                        },
                        {
                            "name": "response.ReadFrom"
                        },
                        {
                            "name": "response.Write"
                        },
                        {
                            "name": "response.WriteHeader"
                        },
                        {
                            "name": "response.WriteString"
                        },
                        {
                            "name": "serverHandler.ServeHTTP"
                        },
                        {
                            "name": "socksDialer.DialWithConn"
                        },
                        {
                            "name": "socksUsernamePassword.Authenticate"
                        },
                        {
                            "name": "stringWriter.WriteString"
                        },
                        {
                            "name": "timeoutHandler.ServeHTTP"
                        },
                        {
                            "name": "timeoutWriter.Write"
                        },
                        {
                            "name": "timeoutWriter.WriteHeader"
                        },
                        {
                            "name": "transportReadFromServerError.Error"
                        },
                        {
                            "name": "unencryptedHTTP2Request.ServeHTTP"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }

net/http/internal/http2

https://pkg.go.dev

Original vendor version evidence · not evaluated as a NuGet range
{
                    "vendor": "Go standard library",
                    "product": "net/http/internal/http2",
                    "collectionURL": "https://pkg.go.dev",
                    "packageName": "net/http/internal/http2",
                    "versions": [
                        {
                            "version": "1.27.0-0",
                            "lessThan": "1.27.2",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ],
                    "programRoutines": [
                        {
                            "name": "requestBody.Close"
                        },
                        {
                            "name": "requestBody.Read"
                        },
                        {
                            "name": "serverConn.closeStream"
                        },
                        {
                            "name": "serverConn.handlerDone"
                        },
                        {
                            "name": "serverConn.newWriterAndRequest"
                        },
                        {
                            "name": "serverConn.newWriterAndRequestNoBody"
                        },
                        {
                            "name": "serverConn.noteBodyRead"
                        },
                        {
                            "name": "serverConn.processHeaders"
                        },
                        {
                            "name": "serverConn.runHandler"
                        },
                        {
                            "name": "serverConn.scheduleHandler"
                        },
                        {
                            "name": "Server.ServeConn"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }

golang.org/x/net/http2

https://pkg.go.dev

Original vendor version evidence · not evaluated as a NuGet range
{
                    "vendor": "golang.org/x/net",
                    "product": "golang.org/x/net/http2",
                    "collectionURL": "https://pkg.go.dev",
                    "packageName": "golang.org/x/net/http2",
                    "versions": [
                        {
                            "version": "0",
                            "lessThan": "0.60.0",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ],
                    "programRoutines": [
                        {
                            "name": "requestBody.Close"
                        },
                        {
                            "name": "requestBody.Read"
                        },
                        {
                            "name": "serverConn.closeStream"
                        },
                        {
                            "name": "serverConn.handlerDone"
                        },
                        {
                            "name": "serverConn.newWriterAndRequest"
                        },
                        {
                            "name": "serverConn.newWriterAndRequestNoBody"
                        },
                        {
                            "name": "serverConn.noteBodyRead"
                        },
                        {
                            "name": "serverConn.processHeaders"
                        },
                        {
                            "name": "serverConn.runHandler"
                        },
                        {
                            "name": "serverConn.scheduleHandler"
                        },
                        {
                            "name": "ClientConn.Close"
                        },
                        {
                            "name": "ClientConn.Ping"
                        },
                        {
                            "name": "ClientConn.RoundTrip"
                        },
                        {
                            "name": "ClientConn.Shutdown"
                        },
                        {
                            "name": "ConfigureServer"
                        },
                        {
                            "name": "ConfigureTransport"
                        },
                        {
                            "name": "ConfigureTransports"
                        },
                        {
                            "name": "ConnectionError.Error"
                        },
                        {
                            "name": "ErrCode.String"
                        },
                        {
                            "name": "FrameHeader.String"
                        },
                        {
                            "name": "FrameType.String"
                        },
                        {
                            "name": "FrameWriteRequest.String"
                        },
                        {
                            "name": "Framer.ReadFrame"
                        },
                        {
                            "name": "Framer.ReadFrameForHeader"
                        },
                        {
                            "name": "Framer.ReadFrameHeader"
                        },
                        {
                            "name": "Framer.WriteContinuation"
                        },
                        {
                            "name": "Framer.WriteData"
                        },
                        {
                            "name": "Framer.WriteDataPadded"
                        },
                        {
                            "name": "Framer.WriteGoAway"
                        },
                        {
                            "name": "Framer.WriteHeaders"
                        },
                        {
                            "name": "Framer.WritePing"
                        },
                        {
                            "name": "Framer.WritePriority"
                        },
                        {
                            "name": "Framer.WritePriorityUpdate"
                        },
                        {
                            "name": "Framer.WritePushPromise"
                        },
                        {
                            "name": "Framer.WriteRSTStream"
                        },
                        {
                            "name": "Framer.WriteRawFrame"
                        },
                        {
                            "name": "Framer.WriteSettings"
                        },
                        {
                            "name": "Framer.WriteSettingsAck"
                        },
                        {
                            "name": "Framer.WriteWindowUpdate"
                        },
                        {
                            "name": "GoAwayError.Error"
                        },
                        {
                            "name": "ReadFrameHeader"
                        },
                        {
                            "name": "Server.ServeConn"
                        },
                        {
                            "name": "Setting.String"
                        },
                        {
                            "name": "SettingID.String"
                        },
                        {
                            "name": "SettingsFrame.ForeachSetting"
                        },
                        {
                            "name": "StreamError.Error"
                        },
                        {
                            "name": "Transport.CloseIdleConnections"
                        },
                        {
                            "name": "Transport.NewClientConn"
                        },
                        {
                            "name": "Transport.RoundTrip"
                        },
                        {
                            "name": "Transport.RoundTripOpt"
                        },
                        {
                            "name": "bufferedWriter.Flush"
                        },
                        {
                            "name": "bufferedWriter.Write"
                        },
                        {
                            "name": "bufferedWriterTimeoutWriter.Write"
                        },
                        {
                            "name": "chunkWriter.Write"
                        },
                        {
                            "name": "clientConnPool.GetClientConn"
                        },
                        {
                            "name": "connError.Error"
                        },
                        {
                            "name": "dataBuffer.Read"
                        },
                        {
                            "name": "duplicatePseudoHeaderError.Error"
                        },
                        {
                            "name": "gzipReader.Close"
                        },
                        {
                            "name": "gzipReader.Read"
                        },
                        {
                            "name": "headerFieldNameError.Error"
                        },
                        {
                            "name": "headerFieldValueError.Error"
                        },
                        {
                            "name": "netHTTPClientConn.Close"
                        },
                        {
                            "name": "netHTTPClientConn.RoundTrip"
                        },
                        {
                            "name": "noDialClientConnPool.GetClientConn"
                        },
                        {
                            "name": "noDialH2RoundTripper.NewClientConn"
                        },
                        {
                            "name": "noDialH2RoundTripper.RoundTrip"
                        },
                        {
                            "name": "pipe.Read"
                        },
                        {
                            "name": "priorityWriteSchedulerRFC7540.CloseStream"
                        },
                        {
                            "name": "priorityWriteSchedulerRFC7540.OpenStream"
                        },
                        {
                            "name": "priorityWriteSchedulerRFC9218.OpenStream"
                        },
                        {
                            "name": "pseudoHeaderError.Error"
                        },
                        {
                            "name": "responseWriter.Flush"
                        },
                        {
                            "name": "responseWriter.FlushError"
                        },
                        {
                            "name": "responseWriter.Push"
                        },
                        {
                            "name": "responseWriter.SetReadDeadline"
                        },
                        {
                            "name": "responseWriter.SetWriteDeadline"
                        },
                        {
                            "name": "responseWriter.Write"
                        },
                        {
                            "name": "responseWriter.WriteHeader"
                        },
                        {
                            "name": "responseWriter.WriteString"
                        },
                        {
                            "name": "roundRobinWriteScheduler.OpenStream"
                        },
                        {
                            "name": "serverConn.CloseConn"
                        },
                        {
                            "name": "serverConn.Flush"
                        },
                        {
                            "name": "stickyErrWriter.Write"
                        },
                        {
                            "name": "transportResponseBody.Close"
                        },
                        {
                            "name": "transportResponseBody.Read"
                        },
                        {
                            "name": "unencryptedTransport.RoundTrip"
                        },
                        {
                            "name": "writeData.String"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }

Original source record · Cite this exact observation · Complete original publisher JSON

ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 9 Nov 11:51 UTC · 275 of 275 readable · 273 fully read · documentation 469/469 current