diff --git a/routers/base.go b/routers/base.go
index 9cbaad3f..997d1d99 100644
--- a/routers/base.go
+++ b/routers/base.go
@@ -171,6 +171,14 @@ func getHostname(s string) string {
 	return res
 }
 
+func removePort(s string) string {
+	ipStr, _, err := net.SplitHostPort(s)
+	if err != nil {
+		ipStr = s
+	}
+	return ipStr
+}
+
 func isHostIntranet(s string) bool {
 	ipStr, _, err := net.SplitHostPort(s)
 	if err != nil {
diff --git a/routers/cors_filter.go b/routers/cors_filter.go
index 78c57685..a109108a 100644
--- a/routers/cors_filter.go
+++ b/routers/cors_filter.go
@@ -44,7 +44,7 @@ func CorsFilter(ctx *context.Context) {
 	origin := ctx.Input.Header(headerOrigin)
 	originConf := conf.GetConfigString("origin")
 	originHostname := getHostname(origin)
-	host := ctx.Request.Host
+	host := removePort(ctx.Request.Host)
 
 	if strings.HasPrefix(origin, "http://localhost") || strings.HasPrefix(origin, "https://localhost") || strings.HasPrefix(origin, "http://127.0.0.1") || strings.HasPrefix(origin, "http://casdoor-app") {
 		setCorsHeaders(ctx, origin)