Fixed #33830 -- Fixed VariableDoesNotExist when rendering ClearableFileInput.

django/forms/widgets.py

@@ -481,6 +481,7 @@ class ClearableFileInput(FileInput):
                 "clear_checkbox_label": self.clear_checkbox_label,
             }
         )
+        context["widget"]["attrs"].setdefault("disabled", False)
         return context
 
     def value_from_datadict(self, data, files, name):

tests/forms_tests/widget_tests/test_clearablefileinput.py

@@ -110,6 +110,16 @@ class ClearableFileInputTest(WidgetTest):
             ),
         )
 
+    def test_render_no_disabled(self):
+        class TestForm(Form):
+            clearable_file = FileField(
+                widget=self.widget, initial=FakeFieldFile(), required=False
+            )
+
+        form = TestForm()
+        with self.assertNoLogs("django.template", "DEBUG"):
+            form.render()
+
     def test_render_as_subwidget(self):
         """A ClearableFileInput as a subwidget of MultiWidget."""
         widget = MultiWidget(widgets=(self.widget,))