Merge pull request from GHSA-557h-hf3c-whcg

Make sure session is cleared using soft logout

classes/Cookie.php

@@ -262,6 +262,7 @@ class CookieCore
      */
     public function mylogout()
     {
+        $this->deleteSession();
         unset(
             $this->_content['id_customer'],
             $this->_content['id_guest'],
@@ -514,7 +515,7 @@ class CookieCore
      */
     public function isSessionAlive()
     {
-        if (!isset($this->session_id, $this->session_token)) {
+        if (!isset($this->session_id) || !isset($this->session_token)) {
             return false;
         }