diff --git a/crates/oxc_linter/src/rules/unicorn/require_post_message_target_origin.rs b/crates/oxc_linter/src/rules/unicorn/require_post_message_target_origin.rs
index e058db3a8e76f..b35e46e1fd186 100644
--- a/crates/oxc_linter/src/rules/unicorn/require_post_message_target_origin.rs
+++ b/crates/oxc_linter/src/rules/unicorn/require_post_message_target_origin.rs
@@ -62,6 +62,9 @@ impl Rule for RequirePostMessageTargetOrigin {
             _ => return,
         };
         if matches!(member_expr.static_property_name(), Some(name) if name == "postMessage") {
+            if is_message_port_expression(member_expr.object()) {
+                return;
+            }
             let span = call_expr.arguments[0].span();
             ctx.diagnostic_with_suggestion(
                 require_post_message_target_origin_diagnostic(Span::new(span.end, span.end)),
@@ -79,6 +82,37 @@ impl Rule for RequirePostMessageTargetOrigin {
     }
 }
 
+fn is_message_port_expression(expr: &Expression<'_>) -> bool {
+    let mut current_expr = expr.without_parentheses();
+    loop {
+        if let Expression::Identifier(ident) = current_expr
+            && matches!(ident.name.as_str(), "port" | "port1" | "port2" | "messagePort")
+        {
+            return true;
+        }
+
+        let Some(member_expr) = current_expr.get_member_expr() else {
+            return false;
+        };
+
+        if member_expr.static_property_name().is_some_and(|name| matches!(name, "port1" | "port2")) {
+            return true;
+        }
+
+        if member_expr.is_computed()
+            && member_expr.object().without_parentheses().get_member_expr().is_some_and(
+                |object_member| {
+                    object_member.static_property_name().is_some_and(|name| name == "ports")
+                },
+            )
+        {
+            return true;
+        }
+
+        current_expr = member_expr.object().without_parentheses();
+    }
+}
+
 #[test]
 fn test() {
     use crate::tester::Tester;
@@ -101,6 +135,10 @@ fn test() {
         "window.c.postMessage?.(message)",
         "window.a.b?.postMessage(message)",
         "window?.a?.b?.postMessage(message)",
+        "event.ports[0].postMessage(message)",
+        "channel.port1.postMessage(message)",
+        "channel['port2'].postMessage(message)",
+        "event?.ports[0].postMessage(message)",
     ];
 
     let fail = vec![