diff --git a/keystone/models/token_model.py b/keystone/models/token_model.py
index 7f190286a7..413545b53a 100644
--- a/keystone/models/token_model.py
+++ b/keystone/models/token_model.py
@@ -13,6 +13,7 @@
 """Unified in-memory token model."""
 
 from oslo_log import log
+from oslo_serialization import jsonutils
 from oslo_serialization import msgpackutils
 from oslo_utils import reflection
 import six
@@ -325,6 +326,21 @@ class TokenModel(object):
 
         return roles
 
+    def _get_oauth_roles(self):
+        roles = []
+        access_token_roles = self.access_token['role_ids']
+        access_token_roles = [
+            {'role_id': r} for r in jsonutils.loads(access_token_roles)]
+        effective_access_token_roles = (
+            PROVIDERS.assignment_api.add_implied_roles(access_token_roles)
+        )
+        user_roles = [r['id'] for r in self._get_project_roles()]
+        for role in effective_access_token_roles:
+            if role['role_id'] in user_roles:
+                role = PROVIDERS.role_api.get_role(role['role_id'])
+                roles.append({'id': role['id'], 'name': role['name']})
+        return roles
+
     def _get_federated_roles(self):
         roles = []
         group_ids = [group['id'] for group in self.federated_groups]
@@ -428,6 +444,8 @@ class TokenModel(object):
             roles = self._get_system_roles()
         elif self.trust_scoped:
             roles = self._get_trust_roles()
+        elif self.oauth_scoped:
+            roles = self._get_oauth_roles()
         elif self.is_federated and not self.unscoped:
             roles = self._get_federated_roles()
         elif self.domain_scoped:
diff --git a/keystone/tests/unit/test_v3_oauth1.py b/keystone/tests/unit/test_v3_oauth1.py
index 90378214e4..4c648a23ee 100644
--- a/keystone/tests/unit/test_v3_oauth1.py
+++ b/keystone/tests/unit/test_v3_oauth1.py
@@ -308,6 +308,19 @@ class OAuthFlowTests(OAuth1Tests):
         self.keystone_token = content.result['token']
         self.assertIsNotNone(self.keystone_token_id)
 
+        # add a new role assignment to ensure it is ignored in the access token
+        new_role = {'id': uuid.uuid4().hex, 'name': uuid.uuid4().hex}
+        PROVIDERS.role_api.create_role(new_role['id'], new_role)
+        PROVIDERS.assignment_api.add_role_to_user_and_project(
+            user_id=self.user_id,
+            project_id=self.project_id,
+            role_id=new_role['id'])
+        content = self.post(url, headers=headers, body=body)
+        token = content.result['token']
+        token_roles = [r['id'] for r in token['roles']]
+        self.assertIn(self.role_id, token_roles)
+        self.assertNotIn(new_role['id'], token_roles)
+
 
 class AccessTokenCRUDTests(OAuthFlowTests):
     def test_delete_access_token_dne(self):
diff --git a/releasenotes/notes/bug-1873290-ff7f8e4cee15b75a.yaml b/releasenotes/notes/bug-1873290-ff7f8e4cee15b75a.yaml
new file mode 100644
index 0000000000..ad35a30479
--- /dev/null
+++ b/releasenotes/notes/bug-1873290-ff7f8e4cee15b75a.yaml
@@ -0,0 +1,19 @@
+---
+security:
+  - |
+    [`bug 1873290 <https://bugs.launchpad.net/keystone/+bug/1873290>`_]
+    [`bug 1872735 <https://bugs.launchpad.net/keystone/+bug/1872735>`_]
+    Fixed the token model to respect the roles authorized OAuth1 access tokens.
+    Previously, the list of roles authorized for an OAuth1 access token were
+    ignored, so when an access token was used to request a keystone token, the
+    keystone token would contain every role assignment the creator had for the
+    project. This also fixed EC2 credentials to respect those roles as well.
+fixes:
+  - |
+    [`bug 1873290 <https://bugs.launchpad.net/keystone/+bug/1873290>`_]
+    [`bug 1872735 <https://bugs.launchpad.net/keystone/+bug/1872735>`_]
+    Fixed the token model to respect the roles authorized OAuth1 access tokens.
+    Previously, the list of roles authorized for an OAuth1 access token were
+    ignored, so when an access token was used to request a keystone token, the
+    keystone token would contain every role assignment the creator had for the
+    project. This also fixed EC2 credentials to respect those roles as well.