diff --git a/wagtail/admin/api/views.py b/wagtail/admin/api/views.py
index f67e11d1e..bbb9c8445 100644
--- a/wagtail/admin/api/views.py
+++ b/wagtail/admin/api/views.py
@@ -2,7 +2,6 @@ from collections import OrderedDict
 
 from rest_framework.authentication import SessionAuthentication
 
-from wagtail.api.v2.utils import filter_page_type
 from wagtail.api.v2.views import PagesAPIViewSet
 from wagtail.core.models import Page
 
@@ -54,25 +53,14 @@ class PagesAdminAPIViewSet(PagesAPIViewSet):
         """
         return Page.get_first_root_node()
 
-    def get_base_queryset(self, models=None):
+    def get_base_queryset(self):
         """
         Returns a queryset containing all pages that can be seen by this user.
 
         This is used as the base for get_queryset and is also used to find the
         parent pages when using the child_of and descendant_of filters as well.
         """
-        if models is None:
-            models = [Page]
-
-        if len(models) == 1:
-            queryset = models[0].objects.all()
-        else:
-            queryset = Page.objects.all()
-
-            # Filter pages by specified models
-            queryset = filter_page_type(queryset, models)
-
-        return queryset
+        return Page.objects.all()
 
     def get_queryset(self):
         queryset = super().get_queryset()
diff --git a/wagtail/api/v2/views.py b/wagtail/api/v2/views.py
index 34d5e817f..ad80181b2 100644
--- a/wagtail/api/v2/views.py
+++ b/wagtail/api/v2/views.py
@@ -405,26 +405,15 @@ class PagesAPIViewSet(BaseAPIViewSet):
         """
         return self.request.site.root_page
 
-    def get_base_queryset(self, models=None):
+    def get_base_queryset(self):
         """
         Returns a queryset containing all pages that can be seen by this user.
 
         This is used as the base for get_queryset and is also used to find the
         parent pages when using the child_of and descendant_of filters as well.
         """
-        if models is None:
-            models = [Page]
-
-        if len(models) == 1:
-            queryset = models[0].objects.all()
-        else:
-            queryset = Page.objects.all()
-
-            # Filter pages by specified models
-            queryset = filter_page_type(queryset, models)
-
         # Get live pages that are not in a private section
-        queryset = queryset.public().live()
+        queryset = Page.objects.all().public().live()
 
         # Filter by site
         if self.request.site:
@@ -444,7 +433,14 @@ class PagesAPIViewSet(BaseAPIViewSet):
         except (LookupError, ValueError):
             raise BadRequestError("type doesn't exist")
 
-        return self.get_base_queryset(models)
+        if not models:
+            return self.get_base_queryset()
+
+        elif len(models) == 1:
+            return models[0].objects.filter(id__in=self.get_base_queryset().values_list('id', flat=True))
+
+        else:  # len(models) > 1
+            return filter_page_type(self.get_base_queryset(), models)
 
     def get_object(self):
         base = super().get_object()