diff --git a/htdocs/core/ajax/ajaxcompanies.php b/htdocs/core/ajax/ajaxcompanies.php
index ef0d7303715..330f0884605 100644
--- a/htdocs/core/ajax/ajaxcompanies.php
+++ b/htdocs/core/ajax/ajaxcompanies.php
@@ -31,6 +31,14 @@ if (!defined('NOREQUIRESOC'))   define('NOREQUIRESOC', '1');
 
 // Load Dolibarr environment
 require '../../main.inc.php';
+require_once DOL_DOCUMENT_ROOT.'/societe/class/societe.class.php';
+
+$object = new Societe($db);
+
+$usesublevelpermission = '';
+
+// Security check
+restrictedArea($user, $object->module, $object, $object->table_element, $usesublevelpermission);
 
 
 /*
@@ -68,15 +76,15 @@ if (GETPOST('newcompany') || GETPOST('socid', 'int') || GETPOST('id_fourn')) {
 		$sql .= " AND (";
 		// Add criteria on name/code
 		if (!empty($conf->global->COMPANY_DONOTSEARCH_ANYWHERE)) {   // Can use index
-			$sql .= "s.nom LIKE '".$db->escape($socid)."%'";
-			$sql .= " OR s.code_client LIKE '".$db->escape($socid)."%'";
-			$sql .= " OR s.code_fournisseur LIKE '".$db->escape($socid)."%'";
+			$sql .= "s.nom LIKE '".$db->escape($db->escapeforlike($socid))."%'";
+			$sql .= " OR s.code_client LIKE '".$db->escape($db->escapeforlike($socid))."%'";
+			$sql .= " OR s.code_fournisseur LIKE '".$db->escape($db->escapeforlike($socid))."%'";
 		} else {
-			$sql .= "s.nom LIKE '%".$db->escape($socid)."%'";
-			$sql .= " OR s.code_client LIKE '%".$db->escape($socid)."%'";
-			$sql .= " OR s.code_fournisseur LIKE '%".$db->escape($socid)."%'";
+			$sql .= "s.nom LIKE '%".$db->escape($db->escapeforlike($socid))."%'";
+			$sql .= " OR s.code_client LIKE '%".$db->escape($db->escapeforlike($socid))."%'";
+			$sql .= " OR s.code_fournisseur LIKE '%".$db->escape($db->escapeforlike($socid))."%'";
 		}
-		if (!empty($conf->global->SOCIETE_ALLOW_SEARCH_ON_ROWID)) $sql .= " OR s.rowid = '".$db->escape($socid)."'";
+		if (!empty($conf->global->SOCIETE_ALLOW_SEARCH_ON_ROWID)) $sql .= " OR s.rowid = ".((int) $socid);
 		$sql .= ")";
 	}
 	//if (GETPOST("filter")) $sql.= " AND (".GETPOST("filter", "alpha").")"; // Add other filters
diff --git a/htdocs/core/ajax/ajaxinvoiceline.php b/htdocs/core/ajax/ajaxinvoiceline.php
index 432ad15b151..f575bf326ac 100644
--- a/htdocs/core/ajax/ajaxinvoiceline.php
+++ b/htdocs/core/ajax/ajaxinvoiceline.php
@@ -39,7 +39,6 @@ $action = GETPOST('action', 'aZ09');
 $htmlname = GETPOST('htmlname', 'alpha');
 
 
-
 // Security check
 restrictedArea($user, 'facture', $invoice_id, '', '', 'fk_soc', 'rowid');
 
diff --git a/htdocs/core/ajax/ajaxtooltip.php b/htdocs/core/ajax/ajaxtooltip.php
index 8652908eced..787829d5864 100644
--- a/htdocs/core/ajax/ajaxtooltip.php
+++ b/htdocs/core/ajax/ajaxtooltip.php
@@ -39,13 +39,14 @@ include '../../main.inc.php';
 include_once DOL_DOCUMENT_ROOT.'/core/lib/functions2.lib.php';
 include_once DOL_DOCUMENT_ROOT.'/core/class/html.form.class.php';
 
+
+
 top_httphead();
 
 // opensurvey as aZ09 id
 $id = GETPOST('id', 'aZ09');
-$objecttype = GETPOST('objecttype', 'aZ09');
+$objecttype = GETPOST('objecttype', 'aZ09');	// 'module' or 'myobject@mymodule', 'mymodule_myobject'
 
-$html = '';
 $regs = array();
 $params = array();
 if (GETPOSTISSET('infologin')) {
@@ -214,24 +215,60 @@ if ($objecttype == 'invoice_supplier') {
 }
 // print "objecttype=".$objecttype." module=".$module." subelement=".$subelement." classfile=".$classfile." classname=".$classname." classpath=".$classpath."<br>";
 
+
+// Define a generic object with a very low cost memory and cpu load
+$object = new stdClass();
+$object->module = $module;
+$object->element = $myobject;
+if (empty($classname)) {
+	$classname = ucfirst($module);
+}
+if (empty($classpath)) {
+	$classpath = $module.'/class';
+}
+if (empty($classfile)) {
+	$classfile = $myobject;
+}
+
+// Load object
 if (isModEnabled($module)) {
 	$res = dol_include_once('/'.$classpath.'/'.$classfile.'.class.php');
 	if ($res) {
-		if (class_exists($classname)) {
+		if (class_exists($classname) && $id > 0) {
 			$object = new $classname($db);
 			$res = $object->fetch($id);
-			if ($res > 0) {
-				$html = $object->getTooltipContent($params);
-			} elseif ($res == 0) {
-				$html = $langs->trans('Deleted');
-			}
-			unset($object);
 		} else {
 			dol_syslog("Class with classname ".$classname." is unknown even after the include", LOG_ERR);
 		}
+	} else {
+		dol_syslog("Failed to include ".$classpath."/".$classfile, LOG_ERR);
 	}
 }
 
+$usesublevelpermission = ($module != $myobject ? $myobject : '');
+if ($usesublevelpermission && !isset($user->rights->$module->$myobject)) {	// There is no permission on object defined, we will check permission on module directly
+	$usesublevelpermission = '';
+}
+
+// Security check
+restrictedArea($user, $object->module, $object, $object->table_element, $usesublevelpermission);
+
+
+/*
+ * View
+ */
+
+$html = '';
+
+if (is_object($object)) {
+	if ($object->id > 0) {
+		$html = $object->getTooltipContent($params);
+	} elseif ($res == 0) {
+		$html = $langs->trans('Deleted');
+	}
+	unset($object);
+}
+
 print $html;
 
 $db->close();
diff --git a/htdocs/core/ajax/fetchKnowledgeRecord.php b/htdocs/core/ajax/fetchKnowledgeRecord.php
index 295d164022f..afadf119e16 100644
--- a/htdocs/core/ajax/fetchKnowledgeRecord.php
+++ b/htdocs/core/ajax/fetchKnowledgeRecord.php
@@ -54,10 +54,10 @@ $idticketgroup = GETPOST('idticketgroup', 'aZ09');
 $idticketgroup = GETPOST('idticketgroup', 'aZ09');
 $lang = GETPOST('lang', 'aZ09');
 
-/*if (defined("NOLOGIN") && !getDolGlobalString('TICKET_ENABLE_PUBLIC_INTERFACE')) {
-	// If we ask public content (so without login), we block if option TICKET_ENABLE_PUBLIC_INTERFACE is not enabled
-	httponly_accessforbidden('');
-}*/
+// Security check
+if (!defined("NOLOGIN")) {	// No need for restrictedArea if not logged. Later the select will filter on public articles only if not logged.
+	restrictedArea($user, 'knowledgemanagement', 0, 'knowledgemanagement_knowledgerecord', 'knowledgerecord');
+}
 
 
 /*