diff --git a/modules/lemonldap-ng-portal/example/index_skin.pl b/modules/lemonldap-ng-portal/example/index_skin.pl
index 5cc37a2b4..600a313bd 100755
--- a/modules/lemonldap-ng-portal/example/index_skin.pl
+++ b/modules/lemonldap-ng-portal/example/index_skin.pl
@@ -108,6 +108,7 @@ elsif ( my $notif = $portal->notification ) {
         AUTH_ERROR_TYPE => $portal->error_type,
         NOTIFICATION    => $notif,
         SKIN            => $skin,
+        HIDDEN_INPUTS   => $portal->buildHiddenForm(),
     );
 }
 
@@ -121,6 +122,7 @@ elsif ( $portal->{error} == PE_CONFIRM ) {
         AUTH_URL        => $portal->get_url,
         MSG             => $portal->info(),
         SKIN            => $skin,
+        HIDDEN_INPUTS   => $portal->buildHiddenForm(),
     );
 }
 
@@ -137,6 +139,7 @@ else {
         DISPLAY_RESETPASSWORD => $portal->{portalDisplayResetPassword},
         DISPLAY_FORM          => 1,
         MAIL_URL              => $portal->{mailUrl},
+        HIDDEN_INPUTS         => $portal->buildHiddenForm(),
     );
 
     # Adapt template if password policy error
diff --git a/modules/lemonldap-ng-portal/example/skins/impact/confirm.tpl b/modules/lemonldap-ng-portal/example/skins/impact/confirm.tpl
index c0a5b099f..a28a18f32 100644
--- a/modules/lemonldap-ng-portal/example/skins/impact/confirm.tpl
+++ b/modules/lemonldap-ng-portal/example/skins/impact/confirm.tpl
@@ -9,6 +9,7 @@
       <hr class="solid" />
       <p id="timer" class="text-error"><lang en="Automaticaly accept in 5 seconds" fr="Acceptation automatique dans 5 secondes"/></p>
       <form id="form" action="<TMPL_VAR NAME="URL">" method="get" class="login">
+        <TMPL_VAR NAME="HIDDEN_INPUTS">
         <input type="hidden" name="url" value="<TMPL_VAR NAME="AUTH_URL">" />
         <input type="hidden" id="confirm" name="confirm" value="1" />
         <div id="content-all-info">
diff --git a/modules/lemonldap-ng-portal/example/skins/impact/login.tpl b/modules/lemonldap-ng-portal/example/skins/impact/login.tpl
index e88a5d50e..34389aa61 100644
--- a/modules/lemonldap-ng-portal/example/skins/impact/login.tpl
+++ b/modules/lemonldap-ng-portal/example/skins/impact/login.tpl
@@ -17,6 +17,7 @@
       <hr class="solid" />
       <p><span class="text-error"><TMPL_VAR NAME="AUTH_ERROR"></span></p>
       <form action="#" method="post" class="login">
+        <TMPL_VAR NAME="HIDDEN_INPUTS">
         <input type="hidden" name="url" value="" />
         <input type="hidden" name="timezone" />
         <p>
diff --git a/modules/lemonldap-ng-portal/example/skins/impact/notification.tpl b/modules/lemonldap-ng-portal/example/skins/impact/notification.tpl
index 5ab7876ac..22752d3f4 100644
--- a/modules/lemonldap-ng-portal/example/skins/impact/notification.tpl
+++ b/modules/lemonldap-ng-portal/example/skins/impact/notification.tpl
@@ -9,6 +9,7 @@
       <hr class="solid" />
       <p class="text-error"><lang en="New message(s)" fr="Nouveaux messages"/></p>
       <form action="#" method="post" class="login">
+      <TMPL_VAR NAME="HIDDEN_INPUTS">
       <div id="content-all-info">
         <TMPL_VAR NAME="NOTIFICATION">
       </div>
diff --git a/modules/lemonldap-ng-portal/example/skins/pastel/confirm.tpl b/modules/lemonldap-ng-portal/example/skins/pastel/confirm.tpl
index b9a080b84..7d30197cf 100644
--- a/modules/lemonldap-ng-portal/example/skins/pastel/confirm.tpl
+++ b/modules/lemonldap-ng-portal/example/skins/pastel/confirm.tpl
@@ -7,6 +7,7 @@
 	<div class="loginlogo"></div>
 
 	<form id="form" action="<TMPL_VAR NAME="URL">" method="post" class="login">
+		<TMPL_VAR NAME="HIDDEN_INPUTS">
 		<p><input type="hidden" name="url" value="<TMPL_VAR NAME="AUTH_URL">" /></p>
 		<input type="hidden" id="confirm" name="confirm" value="1" />
 		<TMPL_VAR NAME="MSG">
diff --git a/modules/lemonldap-ng-portal/example/skins/pastel/login.tpl b/modules/lemonldap-ng-portal/example/skins/pastel/login.tpl
index dff1a1088..864adf6eb 100644
--- a/modules/lemonldap-ng-portal/example/skins/pastel/login.tpl
+++ b/modules/lemonldap-ng-portal/example/skins/pastel/login.tpl
@@ -9,6 +9,8 @@
 
 		<h3><lang en="Please enter your credentials" fr="Merci de vous authentifier"/></h3>
 		
+		<TMPL_VAR NAME="HIDDEN_INPUTS">
+
 	        <p><input type="hidden" name="url" value="<TMPL_VAR NAME="AUTH_URL">" /></p>
 	        <p><input type="hidden" name="timezone" /></p>
 
diff --git a/modules/lemonldap-ng-portal/example/skins/pastel/notification.tpl b/modules/lemonldap-ng-portal/example/skins/pastel/notification.tpl
index 2e258ff90..6ac7f5c89 100644
--- a/modules/lemonldap-ng-portal/example/skins/pastel/notification.tpl
+++ b/modules/lemonldap-ng-portal/example/skins/pastel/notification.tpl
@@ -7,6 +7,7 @@
 	<div class="loginlogo"></div>
 
 	<form action="#" method="post" class="login">
+		<TMPL_VAR NAME="HIDDEN_INPUTS">
 		<h3><lang en="New message(s)" fr="Nouveaux messages"/>&nbsp;:</h3>
 		<table>
 		<tr><td>
diff --git a/modules/lemonldap-ng-portal/lib/Lemonldap/NG/Portal/IssuerDBSAML.pm b/modules/lemonldap-ng-portal/lib/Lemonldap/NG/Portal/IssuerDBSAML.pm
index bb2304988..6e211975f 100644
--- a/modules/lemonldap-ng-portal/lib/Lemonldap/NG/Portal/IssuerDBSAML.pm
+++ b/modules/lemonldap-ng-portal/lib/Lemonldap/NG/Portal/IssuerDBSAML.pm
@@ -95,11 +95,13 @@ sub issuerForUnAuthUser {
             my $isPassive = $saml_request->IsPassive();
 
             if ($isPassive) {
-                $self->lmLog( "Found isPassive flag in assertion conditions",
-                    'debug' );
+                $self->lmLog( "Found isPassive flag in SAML request", 'debug' );
                 return PE_ERROR;
             }
 
+            # Save dump into SAMLRequest hidden field
+            $self->setHiddenFormValue( 'SAMLRequest', $saml_request->dump() );
+
         }
 
     }
diff --git a/modules/lemonldap-ng-portal/lib/Lemonldap/NG/Portal/Simple.pm b/modules/lemonldap-ng-portal/lib/Lemonldap/NG/Portal/Simple.pm
index c7031416d..503f18a26 100644
--- a/modules/lemonldap-ng-portal/lib/Lemonldap/NG/Portal/Simple.pm
+++ b/modules/lemonldap-ng-portal/lib/Lemonldap/NG/Portal/Simple.pm
@@ -320,6 +320,7 @@ sub setDefaultValues {
     $self->{portalForceAuthnInterval} = 5
       unless ( defined( $self->{portalForceAuthnInterval} ) );
     $self->{portalUserAttr} ||= "_user";
+    $self->{portalHiddenFormValues} = ();
     $self->{securedCookie}  ||= 0;
     $self->{cookieName}     ||= "lemonldap";
     $self->{authentication} ||= 'LDAP';
@@ -365,6 +366,52 @@ sub setDefaultValues {
     $self->{samlIdPResolveCookie} ||= "lemonldapidp";
 }
 
+##@method protected void setHiddenFormValue(string fieldname, string value)
+# Add element into $self->{portalHiddenFormValues}, those values could be
+# used to hide values into HTML form.
+#@param $fieldname The field name which will contain the correponding value
+#@param $value The associated value
+sub setHiddenFormValue {
+    my $self = shift;
+    my $key  = shift;
+    my $val  = shift;
+    $self->{portalHiddenFormValues}->{$key} = $val;
+}
+
+##@method public array getHiddenFormFields()
+# Return all hidden field names.
+#@return array All hidden field names
+sub getHiddenFormFields {
+    my $self = shift;
+    return keys %{$self->{portalHiddenFormValues}};
+}
+
+##@method public void getHiddenFormValue(string fieldname)
+# Get value into $self->{portalHiddenFormValues}.
+#@param $fieldname The existing field name which contains a value
+#@return string The associated value
+sub getHiddenFormValue {
+    my $self = shift;
+    my $key  = shift;
+    return '' unless ( defined($self->{portalHiddenFormValues}->{$key}) );
+    return $self->{portalHiddenFormValues}->{$key}
+}
+
+##@method public string buildHiddenForm()
+# Return an HTML representation of hidden values.
+#@return string
+sub buildHiddenForm {
+    my $self = shift;
+    my @keys = $self->getHiddenFormFields();
+    my $val  = ''; 
+    foreach ( @keys )
+    {
+      $val .= '<input type="hidden" name="' . $_ . '" id="' . $_ . '" value="'
+           .  encode_base64($self->getHiddenFormValue($_)) . '" />';
+    }
+    return $val;
+}
+
 =begin WSDL
 
 _IN lang $string Language