diff --git a/Userland/Libraries/LibWeb/HTML/MessageEvent.cpp b/Userland/Libraries/LibWeb/HTML/MessageEvent.cpp
index cf261533d7..a9fd24b15f 100644
--- a/Userland/Libraries/LibWeb/HTML/MessageEvent.cpp
+++ b/Userland/Libraries/LibWeb/HTML/MessageEvent.cpp
@@ -4,6 +4,7 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
+#include <LibJS/Runtime/Array.h>
 #include <LibWeb/Bindings/Intrinsics.h>
 #include <LibWeb/HTML/MessageEvent.h>
 
@@ -27,6 +28,7 @@ MessageEvent::MessageEvent(JS::Realm& realm, FlyString const& event_name, Messag
     , m_origin(event_init.origin)
     , m_last_event_id(event_init.last_event_id)
     , m_source(event_init.source)
+    , m_ports(event_init.ports)
 {
 }
 
@@ -52,4 +54,17 @@ Variant<JS::Handle<WindowProxy>, JS::Handle<MessagePort>, Empty> MessageEvent::s
     return m_source.value().downcast<JS::Handle<WindowProxy>, JS::Handle<MessagePort>>();
 }
 
+JS::NonnullGCPtr<JS::Object> MessageEvent::ports() const
+{
+    if (!m_ports_array) {
+        Vector<JS::Value> port_vector;
+        for (auto const& port : m_ports) {
+            port_vector.append(JS::Value(port.ptr()));
+        }
+        m_ports_array = JS::Array::create_from(realm(), port_vector);
+        MUST(m_ports_array->set_integrity_level(IntegrityLevel::Frozen));
+    }
+    return *m_ports_array;
+}
+
 }
diff --git a/Userland/Libraries/LibWeb/HTML/MessageEvent.h b/Userland/Libraries/LibWeb/HTML/MessageEvent.h
index d4077ee9ff..9a2a5a5071 100644
--- a/Userland/Libraries/LibWeb/HTML/MessageEvent.h
+++ b/Userland/Libraries/LibWeb/HTML/MessageEvent.h
@@ -20,6 +20,7 @@ struct MessageEventInit : public DOM::EventInit {
     String origin {};
     String last_event_id {};
     Optional<MessageEventSource> source;
+    Vector<JS::Handle<JS::Object>> ports;
 };
 
 class MessageEvent : public DOM::Event {
@@ -36,6 +37,7 @@ public:
     JS::Value data() const { return m_data; }
     String const& origin() const { return m_origin; }
     String const& last_event_id() const { return m_last_event_id; }
+    JS::NonnullGCPtr<JS::Object> ports() const;
     Variant<JS::Handle<WindowProxy>, JS::Handle<MessagePort>, Empty> source() const;
 
 private:
@@ -46,6 +48,8 @@ private:
     String m_origin;
     String m_last_event_id;
     Optional<MessageEventSource> m_source;
+    Vector<JS::Handle<JS::Object>> m_ports;
+    mutable JS::GCPtr<JS::Array> m_ports_array;
 };
 
 }
diff --git a/Userland/Libraries/LibWeb/HTML/MessageEvent.idl b/Userland/Libraries/LibWeb/HTML/MessageEvent.idl
index 0b3168a09d..f54c2187fc 100644
--- a/Userland/Libraries/LibWeb/HTML/MessageEvent.idl
+++ b/Userland/Libraries/LibWeb/HTML/MessageEvent.idl
@@ -14,6 +14,7 @@ interface MessageEvent : Event {
     readonly attribute DOMString lastEventId;
     readonly attribute MessageEventSource? source;
     // FIXME: readonly attribute FrozenArray<MessagePort> ports;
+    readonly attribute any ports;
 };
 
 dictionary MessageEventInit : EventInit {
@@ -22,4 +23,5 @@ dictionary MessageEventInit : EventInit {
     DOMString lastEventId = "";
     MessageEventSource? source = null;
     // FIXME: sequence<MessagePort> ports = [];
+    sequence<object> ports = [];
 };