diff --git a/addons/payment/__openerp__.py b/addons/payment/__openerp__.py
index c192bec7c1b..a3843a872c1 100644
--- a/addons/payment/__openerp__.py
+++ b/addons/payment/__openerp__.py
@@ -12,6 +12,7 @@
         'views/payment_acquirer.xml',
         'views/res_config_view.xml',
         'security/ir.model.access.csv',
+        'security/payment_security.xml',
     ],
     'installable': True,
     'auto_install': True,
diff --git a/addons/payment/security/ir.model.access.csv b/addons/payment/security/ir.model.access.csv
index 18f98939472..f52f9a44d4e 100644
--- a/addons/payment/security/ir.model.access.csv
+++ b/addons/payment/security/ir.model.access.csv
@@ -2,6 +2,6 @@ id,name,model_id:id,group_id:id,perm_read,perm_write,perm_create,perm_unlink
 payment_acquirer_all,payment.acquirer.all,model_payment_acquirer,,1,0,0,0
 payment_acquirer_user,payment.acquirer.user,model_payment_acquirer,base.group_user,1,1,1,0
 payment_acquirer_system,payment.acquirer.system,model_payment_acquirer,base.group_system,1,1,1,1
-payment_transaction_all,payment.transaction.all,model_payment_transaction,,1,1,1,0
+payment_transaction_all,payment.transaction.all,model_payment_transaction,,1,0,0,0
 payment_transaction_user,payment.transaction.user,model_payment_transaction,base.group_user,1,1,1,0
 payment_transaction_system,payment.transaction.system,model_payment_transaction,base.group_system,1,1,1,1
\ No newline at end of file
diff --git a/addons/payment/security/payment_security.xml b/addons/payment/security/payment_security.xml
new file mode 100644
index 00000000000..7bae346c648
--- /dev/null
+++ b/addons/payment/security/payment_security.xml
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="utf-8"?>
+<openerp>
+    <data noupdate="1">
+
+        <record id="payment_transaction_user_rule" model="ir.rule">
+            <field name="name">Access own payment transaction only</field>
+            <field name="model_id" ref="payment.model_payment_transaction"/>
+            <field name="domain_force">[
+                '|',
+                    ('partner_id','=',False),
+                    ('partner_id','=',user.partner_id.id)
+                ]</field>
+            <field name="groups" eval="[(4, ref('base.group_user')), (4, ref('base.group_portal')), (4, ref('base.group_public'))]"/>
+        </record>
+
+        <record id="payment_transaction_salesman_rule" model="ir.rule">
+            <field name="name">Access every payment transaction</field>
+            <field name="model_id" ref="payment.model_payment_transaction"/>
+            <field name="domain_force">[(1, '=', 1)]</field>
+            <field name="groups" eval="[(4, ref('base.group_sale_salesman'))]"/>
+        </record>
+
+    </data>
+</openerp>
diff --git a/addons/payment_paypal/models/paypal.py b/addons/payment_paypal/models/paypal.py
index 21b0fac68bc..c94622a690b 100644
--- a/addons/payment_paypal/models/paypal.py
+++ b/addons/payment_paypal/models/paypal.py
@@ -14,6 +14,7 @@ from openerp.addons.payment.models.payment_acquirer import ValidationError
 from openerp.addons.payment_paypal.controllers.main import PaypalController
 from openerp.osv import osv, fields
 from openerp.tools.float_utils import float_compare
+from openerp import SUPERUSER_ID
 
 _logger = logging.getLogger(__name__)
 
@@ -105,7 +106,7 @@ class AcquirerPaypal(osv.Model):
         return fees
 
     def paypal_form_generate_values(self, cr, uid, id, partner_values, tx_values, context=None):
-        base_url = self.pool['ir.config_parameter'].get_param(cr, uid, 'web.base.url')
+        base_url = self.pool['ir.config_parameter'].get_param(cr, SUPERUSER_ID, 'web.base.url')
         acquirer = self.browse(cr, uid, id, context=context)
 
         paypal_tx_values = dict(tx_values)
diff --git a/addons/website_sale/controllers/main.py b/addons/website_sale/controllers/main.py
index 0de92eb5d44..28ee19d124b 100644
--- a/addons/website_sale/controllers/main.py
+++ b/addons/website_sale/controllers/main.py
@@ -643,7 +643,7 @@ class website_sale(http.Controller):
             }
 
         tx_ids = request.registry['payment.transaction'].search(
-            cr, uid, [
+            cr, SUPERUSER_ID, [
                 '|', ('sale_order_id', '=', order.id), ('reference', '=', order.name)
             ], context=context)
 
@@ -658,7 +658,7 @@ class website_sale(http.Controller):
                 message = ""
                 validation = None
         else:
-            tx = request.registry['payment.transaction'].browse(cr, uid, tx_ids[0], context=context)
+            tx = request.registry['payment.transaction'].browse(cr, SUPERUSER_ID, tx_ids[0], context=context)
             state = tx.state
             if state == 'done':
                 message = '<p>%s</p>' % _('Your payment has been received.')
diff --git a/addons/website_sale/models/sale_order.py b/addons/website_sale/models/sale_order.py
index d9855034018..f4e7691cd77 100644
--- a/addons/website_sale/models/sale_order.py
+++ b/addons/website_sale/models/sale_order.py
@@ -201,9 +201,9 @@ class website(orm.Model):
         transaction_obj = self.pool.get('payment.transaction')
         tx_id = request.session.get('sale_transaction_id')
         if tx_id:
-            tx_ids = transaction_obj.search(cr, uid, [('id', '=', tx_id), ('state', 'not in', ['cancel'])], context=context)
+            tx_ids = transaction_obj.search(cr, SUPERUSER_ID, [('id', '=', tx_id), ('state', 'not in', ['cancel'])], context=context)
             if tx_ids:
-                return transaction_obj.browse(cr, uid, tx_ids[0], context=context)
+                return transaction_obj.browse(cr, SUPERUSER_ID, tx_ids[0], context=context)
             else:
                 request.session['sale_transaction_id'] = False
         return False