diff -r 058bb3dc685f -r 0b59724cb3f2 cubicweb/hooks/test/unittest_security.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cubicweb/hooks/test/unittest_security.py	Sat Jan 16 13:48:51 2016 +0100
@@ -0,0 +1,56 @@
+# copyright 2015 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
+# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
+#
+# This file is part of CubicWeb.
+#
+# CubicWeb is free software: you can redistribute it and/or modify it under the
+# terms of the GNU Lesser General Public License as published by the Free
+# Software Foundation, either version 2.1 of the License, or (at your option)
+# any later version.
+#
+# CubicWeb is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
+# details.
+#
+# You should have received a copy of the GNU Lesser General Public License along
+# with CubicWeb.  If not, see <http://www.gnu.org/licenses/>.
+
+from cubicweb.devtools.testlib import CubicWebTC
+from cubicweb.server import hook
+from cubicweb.predicates import is_instance
+
+
+class SecurityHooksTC(CubicWebTC):
+    def setup_database(self):
+        with self.admin_access.repo_cnx() as cnx:
+            self.add_eid = cnx.create_entity('EmailAddress',
+                                             address=u'hop@perdu.com',
+                                             reverse_use_email=cnx.user.eid).eid
+            cnx.commit()
+
+    def test_inlined_cw_edited_relation(self):
+        """modification of cw_edited to add an inlined relation shouldn't trigger a security error.
+
+        Test for https://www.cubicweb.org/ticket/5477315
+        """
+        sender = self.repo.schema['Email'].rdef('sender')
+        with self.temporary_permissions((sender, {'add': ()})):
+
+            class MyHook(hook.Hook):
+                __regid__ = 'test.pouet'
+                __select__ = hook.Hook.__select__ & is_instance('Email')
+                events = ('before_add_entity',)
+
+                def __call__(self):
+                    self.entity.cw_edited['sender'] = self._cw.user.primary_email[0].eid
+
+            with self.temporary_appobjects(MyHook):
+                with self.admin_access.repo_cnx() as cnx:
+                    email = cnx.create_entity('Email', messageid=u'1234')
+                    cnx.commit()
+                    self.assertEqual(email.sender[0].eid, self.add_eid)
+
+if __name__ == '__main__':
+    from logilab.common.testlib import unittest_main
+    unittest_main()