diff --git a/lizmap/modules/lizmap/classes/qgisVectorLayer.class.php b/lizmap/modules/lizmap/classes/qgisVectorLayer.class.php
index ec078c6b76..1f16318ebf 100644
--- a/lizmap/modules/lizmap/classes/qgisVectorLayer.class.php
+++ b/lizmap/modules/lizmap/classes/qgisVectorLayer.class.php
@@ -208,7 +208,7 @@ public function getDatasourceParameters()
         );
         $parameters = array(
             'dbname', 'service', 'host', 'port', 'user', 'password',
-            'sslmode', 'key', 'estimatedmetadata', 'selectatid',
+            'sslmode', 'authcfg', 'key', 'estimatedmetadata', 'selectatid',
             'srid', 'type', 'checkPrimaryKeyUnicity',
             'table', 'geocol', 'sql', 'schema', 'tablename',
         );
@@ -279,6 +279,22 @@ public function getDatasourceProfile($timeout = 30, $setSearchPathFromLayer = tr
                 if (!empty($dtParams->sslmode)) {
                     $jdbParams['sslmode'] = $dtParams->sslmode;
                 }
+                // when qgis authentication config is used to authenticate a layer against, it requires to have preconfigured jdb::profile to align with the login credentials set in qgis authcfg
+                if (!empty($dtParams->authcfg)) {
+                    $jdbParams['authcfg'] = $dtParams->authcfg;
+                    // retrieving user/password from the corresponding jdb::profile in profiles.ini.php.
+                    $ini = new \Jelix\IniFile\IniModifier(jApp::varConfigPath('profiles.ini.php'));
+                    $profiles = $ini->getSectionList();
+                    foreach ($profiles as $profile) {
+                        if ($profile == 'jdb:'.$dtParams->authcfg) {
+                            $options = $ini->getValues($profile);
+                            $jdbParams['user'] = $options['user'];
+                            $jdbParams['password'] = $options['password'];
+
+                            break;
+                        }
+                    }
+                }
             }
             if (!empty($dtParams->schema) && $setSearchPathFromLayer) {
                 $jdbParams['search_path'] = '"'.$dtParams->schema.'",public';
diff --git a/lizmap/modules/lizmap/classes/qgisVectorLayerDatasource.class.php b/lizmap/modules/lizmap/classes/qgisVectorLayerDatasource.class.php
index fe39033d09..9eb2f33d97 100644
--- a/lizmap/modules/lizmap/classes/qgisVectorLayerDatasource.class.php
+++ b/lizmap/modules/lizmap/classes/qgisVectorLayerDatasource.class.php
@@ -22,6 +22,7 @@ class qgisVectorLayerDatasource
         'user' => "user='?([^ ']+)'? ",
         'password' => "password='?([^ ']+)'? ",
         'sslmode' => "sslmode='?([^ ']+)'? ",
+        'authcfg' => "authcfg='?([^ ']+)'? ",
         'key' => "key='?([^ ']+)'? ",
         'estimatedmetadata' => 'estimatedmetadata=([^ ]+) ',
         'selectatid' => 'selectatid=([^ ]+) ',