diff --git a/includes/admin/core/class-admin-columns.php b/includes/admin/core/class-admin-columns.php
index 55a65adb..1607220d 100644
--- a/includes/admin/core/class-admin-columns.php
+++ b/includes/admin/core/class-admin-columns.php
@@ -118,6 +118,7 @@ if ( ! class_exists( 'um\admin\core\Admin_Columns' ) ) {
 					'um_adm_action' => 'duplicate_form',
 					'post_id'       => $id,
 					'nonce'         => wp_create_nonce( "um-duplicate_form{$id}" ),
+					'_wpnonce'      => wp_create_nonce( 'duplicate_form' ),
 				),
 				admin_url( 'edit.php' )
 			);
diff --git a/includes/admin/core/class-admin-notices.php b/includes/admin/core/class-admin-notices.php
index f89f6f7b..75af3e22 100644
--- a/includes/admin/core/class-admin-notices.php
+++ b/includes/admin/core/class-admin-notices.php
@@ -369,7 +369,6 @@ if ( ! class_exists( 'um\admin\core\Admin_Notices' ) ) {
 			);
 		}
 
-
 		/**
 		 * Regarding page setup
 		 */
@@ -381,9 +380,16 @@ if ( ! class_exists( 'um\admin\core\Admin_Notices' ) ) {
 				foreach ( $pages as $slug => $page_id ) {
 					$page = get_post( $page_id );
 
-					if ( ! isset( $page->ID ) && in_array( $slug, array_keys( UM()->config()->core_pages ) ) ) {
+					if ( ! isset( $page->ID ) && array_key_exists( $slug, UM()->config()->core_pages ) ) {
+						$url = add_query_arg(
+							array(
+								'um_adm_action' => 'install_core_pages',
+								'_wpnonce'      => wp_create_nonce( 'install_core_pages' ),
+							)
+						);
 
-						ob_start(); ?>
+						ob_start();
+						?>
 
 						<p>
 							<?php
@@ -393,18 +399,23 @@ if ( ! class_exists( 'um\admin\core\Admin_Notices' ) ) {
 						</p>
 
 						<p>
-							<a href="<?php echo esc_url( add_query_arg( 'um_adm_action', 'install_core_pages' ) ); ?>" class="button button-primary"><?php _e( 'Create Pages', 'ultimate-member' ) ?></a>
+							<a href="<?php echo esc_url( $url ); ?>" class="button button-primary"><?php esc_html_e( 'Create Pages', 'ultimate-member' ); ?></a>
 							&nbsp;
-							<a href="javascript:void(0);" class="button-secondary um_secondary_dimiss"><?php _e( 'No thanks', 'ultimate-member' ) ?></a>
+							<a href="javascript:void(0);" class="button-secondary um_secondary_dimiss"><?php esc_html_e( 'No thanks', 'ultimate-member' ); ?></a>
 						</p>
 
-						<?php $message = ob_get_clean();
+						<?php
+						$message = ob_get_clean();
 
-						$this->add_notice( 'wrong_pages', array(
-							'class'         => 'updated',
-							'message'       => $message,
-							'dismissible'   => true
-						), 20 );
+						$this->add_notice(
+							'wrong_pages',
+							array(
+								'class'       => 'updated',
+								'message'     => $message,
+								'dismissible' => true,
+							),
+							20
+						);
 
 						break;
 					}
@@ -413,23 +424,30 @@ if ( ! class_exists( 'um\admin\core\Admin_Notices' ) ) {
 				if ( isset( $pages['user'] ) ) {
 					$test = get_post( $pages['user'] );
 					if ( isset( $test->post_parent ) && $test->post_parent > 0 ) {
-						$this->add_notice( 'wrong_user_page', array(
-							'class'     => 'updated',
-							'message'   => '<p>' . __( 'Ultimate Member Setup Error: User page can not be a child page.', 'ultimate-member' ) . '</p>',
-						), 25 );
+						$this->add_notice(
+							'wrong_user_page',
+							array(
+								'class'   => 'updated',
+								'message' => '<p>' . esc_html__( 'Ultimate Member Setup Error: User page can not be a child page.', 'ultimate-member' ) . '</p>',
+							),
+							25
+						);
 					}
 				}
 
 				if ( isset( $pages['account'] ) ) {
 					$test = get_post( $pages['account'] );
 					if ( isset( $test->post_parent ) && $test->post_parent > 0 ) {
-						$this->add_notice( 'wrong_account_page', array(
-							'class'     => 'updated',
-							'message'   => '<p>' . __( 'Ultimate Member Setup Error: Account page can not be a child page.', 'ultimate-member' ) . '</p>',
-						), 30 );
+						$this->add_notice(
+							'wrong_account_page',
+							array(
+								'class'   => 'updated',
+								'message' => '<p>' . esc_html__( 'Ultimate Member Setup Error: Account page can not be a child page.', 'ultimate-member' ) . '</p>',
+							),
+							30
+						);
 					}
 				}
-
 			}
 		}
 
@@ -441,12 +459,18 @@ if ( ! class_exists( 'um\admin\core\Admin_Notices' ) ) {
 			$hide_exif_notice = get_option( 'um_hide_exif_notice' );
 
 			if ( ! extension_loaded( 'exif' ) && ! $hide_exif_notice ) {
+				$url = add_query_arg(
+					array(
+						'um_adm_action' => 'um_hide_exif_notice',
+						'_wpnonce'      => wp_create_nonce( 'um_hide_exif_notice' ),
+					)
+				);
 				$this->add_notice(
 					'exif_disabled',
 					array(
 						'class'   => 'updated',
 						// translators: %s: query args.
-						'message' => '<p>' . sprintf( __( 'Exif is not enabled on your server. Mobile photo uploads will not be rotated correctly until you enable the exif extension. <a href="%s">Hide this notice</a>', 'ultimate-member' ), add_query_arg( 'um_adm_action', 'um_hide_exif_notice' ) ) . '</p>',
+						'message' => '<p>' . sprintf( __( 'Exif is not enabled on your server. Mobile photo uploads will not be rotated correctly until you enable the exif extension. <a href="%s">Hide this notice</a>', 'ultimate-member' ), $url ) . '</p>',
 					),
 					10
 				);
diff --git a/includes/admin/core/class-admin-settings.php b/includes/admin/core/class-admin-settings.php
index d8a7cb4e..d504b8c7 100644
--- a/includes/admin/core/class-admin-settings.php
+++ b/includes/admin/core/class-admin-settings.php
@@ -3072,10 +3072,17 @@ if ( ! class_exists( 'um\admin\core\Admin_Settings' ) ) {
 		 */
 		public function settings_override_templates_tab() {
 			$um_check_version = get_transient( 'um_check_template_versions' );
+
+			$check_url = add_query_arg(
+				array(
+					'um_adm_action' => 'check_templates_version',
+					'_wpnonce'      => wp_create_nonce( 'check_templates_version' ),
+				)
+			);
 			?>
 
 			<p class="description" style="margin: 20px 0 0 0;">
-				<a href="<?php echo esc_url( add_query_arg( 'um_adm_action', 'check_templates_version' ) ); ?>" class="button" style="margin-right: 10px;">
+				<a href="<?php echo esc_url( $check_url ); ?>" class="button" style="margin-right: 10px;">
 					<?php esc_html_e( 'Re-check templates', 'ultimate-member' ); ?>
 				</a>
 				<?php
diff --git a/includes/admin/templates/dashboard/cache.php b/includes/admin/templates/dashboard/cache.php
index a2241443..0477b9dd 100644
--- a/includes/admin/templates/dashboard/cache.php
+++ b/includes/admin/templates/dashboard/cache.php
@@ -1,4 +1,5 @@
-<?php if ( ! defined( 'ABSPATH' ) ) {
+<?php
+if ( ! defined( 'ABSPATH' ) ) {
 	exit;
 }
 
@@ -9,18 +10,32 @@ $count = $wpdb->get_var(
 	FROM {$wpdb->options}
 	WHERE option_name LIKE 'um_cache_userdata_%'"
 );
+
+$url_user_cache = add_query_arg(
+	array(
+		'um_adm_action' => 'user_cache',
+		'_wpnonce'      => wp_create_nonce( 'user_cache' ),
+	)
+);
+
+$url_user_status_cache = add_query_arg(
+	array(
+		'um_adm_action' => 'user_status_cache',
+		'_wpnonce'      => wp_create_nonce( 'user_status_cache' ),
+	)
+);
 ?>
 
-<p><?php _e( 'Run this task from time to time to keep your DB clean.', 'ultimate-member' ) ?></p>
+<p><?php esc_html_e( 'Run this task from time to time to keep your DB clean.', 'ultimate-member' ); ?></p>
 
 <p>
-	<a href="<?php echo esc_url( add_query_arg( 'um_adm_action', 'user_cache' ) ); ?>" class="button">
+	<a href="<?php echo esc_url( $url_user_cache ); ?>" class="button">
 		<?php
 		// translators: %s: users number.
 		echo esc_html( sprintf( __( 'Clear cache of %s users', 'ultimate-member' ), $count ) );
 		?>
 	</a>
-	<a href="<?php echo esc_url( add_query_arg( 'um_adm_action', 'user_status_cache' ) ); ?>" class="button">
+	<a href="<?php echo esc_url( $url_user_status_cache ); ?>" class="button">
 		<?php esc_html_e( 'Clear user statuses cache', 'ultimate-member' ); ?>
 	</a>
 </p>
diff --git a/includes/admin/templates/dashboard/purge.php b/includes/admin/templates/dashboard/purge.php
index b1facb25..5e80926b 100644
--- a/includes/admin/templates/dashboard/purge.php
+++ b/includes/admin/templates/dashboard/purge.php
@@ -1,7 +1,15 @@
-<?php if ( ! defined( 'ABSPATH' ) ) {
+<?php
+if ( ! defined( 'ABSPATH' ) ) {
 	exit;
 }
 
+$url = add_query_arg(
+	array(
+		'um_adm_action' => 'purge_temp',
+		'_wpnonce'      => wp_create_nonce( 'purge_temp' ),
+	)
+);
+
 if ( $this->dir_size( 'temp' ) > 0.1 ) { ?>
 
 	<p>
@@ -12,8 +20,8 @@ if ( $this->dir_size( 'temp' ) > 0.1 ) { ?>
 	</p>
 
 	<p>
-		<a href="<?php echo esc_url( add_query_arg( 'um_adm_action', 'purge_temp' ) ); ?>" class="button">
-			<?php _e( 'Purge Temp', 'ultimate-member' ); ?>
+		<a href="<?php echo esc_url( $url ); ?>" class="button">
+			<?php esc_html_e( 'Purge Temp', 'ultimate-member' ); ?>
 		</a>
 	</p>
 
diff --git a/includes/admin/templates/dashboard/upgrade-request.php b/includes/admin/templates/dashboard/upgrade-request.php
index b5061d8e..0d10fd17 100644
--- a/includes/admin/templates/dashboard/upgrade-request.php
+++ b/includes/admin/templates/dashboard/upgrade-request.php
@@ -1,9 +1,19 @@
-<?php if ( ! defined( 'ABSPATH' ) ) exit; ?>
+<?php
+if ( ! defined( 'ABSPATH' ) ) {
+	exit;
+}
 
+$url = add_query_arg(
+	array(
+		'um_adm_action' => 'manual_upgrades_request',
+		'_wpnonce'      => wp_create_nonce( 'manual_upgrades_request' ),
+	)
+);
+?>
 
-<p><?php _e( 'Run this task from time to time if you have issues with WP Cron and need to get UM extension updates.', 'ultimate-member' ) ?></p>
+<p><?php esc_html_e( 'Run this task from time to time if you have issues with WP Cron and need to get UM extension updates.', 'ultimate-member' ); ?></p>
 <p>
-	<a href="<?php echo esc_url( add_query_arg( 'um_adm_action', 'manual_upgrades_request' ) ); ?>" class="button">
-		<?php _e( 'Get latest versions', 'ultimate-member' ) ?>
+	<a href="<?php echo esc_url( $url ); ?>" class="button">
+		<?php esc_html_e( 'Get latest versions', 'ultimate-member' ); ?>
 	</a>
-</p>
\ No newline at end of file
+</p>
diff --git a/includes/core/class-permalinks.php b/includes/core/class-permalinks.php
index 59f9e6cd..0bbb47bf 100644
--- a/includes/core/class-permalinks.php
+++ b/includes/core/class-permalinks.php
@@ -482,13 +482,20 @@ if ( ! class_exists( 'um\core\Permalinks' ) ) {
 		 * @param $action
 		 * @param $subaction
 		 *
+		 * @deprecated 2.6.9
+		 *
 		 * @return mixed|string|void
 		 */
 		public function admin_act_url( $action, $subaction ) {
-			$url = $this->get_current_url();
-			$url = add_query_arg( 'um_adm_action', $action, $url );
-			$url = add_query_arg( 'sub', $subaction, $url );
-			$url = add_query_arg( 'user_id', um_user( 'ID' ), $url );
+			_deprecated_function( __METHOD__, '2.6.9' );
+			$url = add_query_arg(
+				array(
+					'um_adm_action' => $action,
+					'sub'           => $subaction,
+					'user_id'       => um_user( 'ID' ),
+					'_wpnonce'      => wp_create_nonce( $action ),
+				)
+			);
 			return $url;
 		}