diff --git a/libraries/src/Form/Field/AliastagField.php b/libraries/src/Form/Field/AliastagField.php
index 4521aa3b3cecb..a9638676d3b65 100644
--- a/libraries/src/Form/Field/AliastagField.php
+++ b/libraries/src/Form/Field/AliastagField.php
@@ -41,8 +41,13 @@ protected function getOptions()
 		// Get list of tag type alias
 		$db    = Factory::getDbo();
 		$query = $db->getQuery(true)
-			->select('Distinct type_alias AS value, type_alias AS text')
-			->from('#__contentitem_tag_map');
+			->select(
+				[
+					'DISTINCT ' . $db->quoteName('type_alias', 'value'),
+					$db->quoteName('type_alias', 'text'),
+				]
+			)
+			->from($db->quoteName('#__contentitem_tag_map'));
 		$db->setQuery($query);
 
 		$options = $db->loadObjectList();
diff --git a/libraries/src/Form/Field/AuthorField.php b/libraries/src/Form/Field/AuthorField.php
index fefb699ae18bb..87e16aa0e6cca 100644
--- a/libraries/src/Form/Field/AuthorField.php
+++ b/libraries/src/Form/Field/AuthorField.php
@@ -55,11 +55,21 @@ protected function getOptions()
 
 			// Construct the query
 			$query = $db->getQuery(true)
-				->select('u.id AS value, u.name AS text')
-				->from('#__users AS u')
-				->join('INNER', '#__content AS c ON c.created_by = u.id')
-				->group('u.id, u.name')
-				->order('u.name');
+				->select(
+					[
+						$db->quoteName('u.id', 'value'),
+						$db->quoteName('u.name', 'text'),
+					]
+				)
+				->from($db->quoteName('#__users', 'u'))
+				->join('INNER', $db->quoteName('#__content', 'c'), $db->quoteName('c.created_by') . ' = ' . $db->quoteName('u.id'))
+				->group(
+					[
+						$db->quoteName('u.id'),
+						$db->quoteName('u.name'),
+					]
+				)
+				->order($db->quoteName('u.name'));
 
 			// Setup the query
 			$db->setQuery($query);
diff --git a/libraries/src/Form/Field/ChromestyleField.php b/libraries/src/Form/Field/ChromestyleField.php
index 34e49fff67e51..5532fc964c2d0 100644
--- a/libraries/src/Form/Field/ChromestyleField.php
+++ b/libraries/src/Form/Field/ChromestyleField.php
@@ -16,6 +16,7 @@
 use Joomla\CMS\Form\Form;
 use Joomla\CMS\HTML\HTMLHelper;
 use Joomla\CMS\Language\Text;
+use Joomla\Database\ParameterType;
 
 /**
  * Chrome Styles field.
@@ -75,7 +76,7 @@ public function __set($name, $value)
 		switch ($name)
 		{
 			case 'clientId':
-				$this->clientId = (string) $value;
+				$this->clientId = (int) $value;
 				break;
 
 			default:
@@ -234,11 +235,21 @@ protected function getTemplates()
 		$query = $db->getQuery(true);
 
 		// Build the query.
-		$query->select('element, name')
-			->from('#__extensions')
-			->where('client_id = ' . $this->clientId)
-			->where('type = ' . $db->quote('template'))
-			->where('enabled = 1');
+		$query->select(
+			[
+				$db->quoteName('element'),
+				$db->quoteName('name'),
+			]
+		)
+			->from($db->quoteName('#__extensions'))
+			->where(
+				[
+					$db->quoteName('client_id') . ' = :clientId',
+					$db->quoteName('type') . ' = ' . $db->quote('template'),
+					$db->quoteName('enabled') . ' = 1',
+				]
+			)
+			->bind(':clientId', $this->clientId, ParameterType::INTEGER);
 
 		// Set the query and load the templates.
 		$db->setQuery($query);
diff --git a/libraries/src/Form/Field/ComponentlayoutField.php b/libraries/src/Form/Field/ComponentlayoutField.php
index a5b19846af09e..42825e3e70149 100644
--- a/libraries/src/Form/Field/ComponentlayoutField.php
+++ b/libraries/src/Form/Field/ComponentlayoutField.php
@@ -18,6 +18,7 @@
 use Joomla\CMS\Form\FormField;
 use Joomla\CMS\HTML\HTMLHelper;
 use Joomla\CMS\Language\Text;
+use Joomla\Database\ParameterType;
 
 /**
  * Form Field to display a list of the layouts for a component view from
@@ -69,12 +70,12 @@ protected function getInput()
 		$template = (string) $this->element['template'];
 		$template = preg_replace('#\W#', '', $template);
 
-		$template_style_id = '';
+		$template_style_id = 0;
 
 		if ($this->form instanceof Form)
 		{
 			$template_style_id = $this->form->getValue('template_style_id');
-			$template_style_id = preg_replace('#\W#', '', $template_style_id);
+			$template_style_id = (int) preg_replace('#\W#', '', $template_style_id);
 		}
 
 		$view = (string) $this->element['view'];
@@ -93,21 +94,33 @@ protected function getInput()
 			$query = $db->getQuery(true);
 
 			// Build the query.
-			$query->select('e.element, e.name')
-				->from('#__extensions as e')
-				->where('e.client_id = ' . (int) $clientId)
-				->where('e.type = ' . $db->quote('template'))
-				->where('e.enabled = 1');
+			$query->select(
+				[
+					$db->quoteName('e.element'),
+					$db->quoteName('e.name'),
+				]
+			)
+				->from($db->quoteName('#__extensions', 'e'))
+				->where(
+					[
+						$db->quoteName('e.client_id') . ' = :clientId',
+						$db->quoteName('e.type') . ' = ' . $db->quote('template'),
+						$db->quoteName('e.enabled') . ' = 1',
+					]
+				)
+				->bind(':clientId', $clientId, ParameterType::INTEGER);
 
 			if ($template)
 			{
-				$query->where('e.element = ' . $db->quote($template));
+				$query->where($db->quoteName('e.element') . ' = :template')
+					->bind(':template', $template);
 			}
 
 			if ($template_style_id)
 			{
-				$query->join('LEFT', '#__template_styles as s on s.template=e.element')
-					->where('s.id=' . (int) $template_style_id);
+				$query->join('LEFT', $db->quoteName('#__template_styles', 's'), $db->quoteName('s.template') . ' = ' . $db->quoteName('e.element'))
+					->where($db->quoteName('s.id') . ' = :style')
+					->bind(':style', $template_style_id, ParameterType::INTEGER);
 			}
 
 			// Set the query and load the templates.
diff --git a/libraries/src/Form/Field/ComponentsField.php b/libraries/src/Form/Field/ComponentsField.php
index b56372afad604..7c7d3f94f8e7b 100644
--- a/libraries/src/Form/Field/ComponentsField.php
+++ b/libraries/src/Form/Field/ComponentsField.php
@@ -40,10 +40,19 @@ protected function getOptions()
 	{
 		$db    = Factory::getDbo();
 		$query = $db->getQuery(true)
-			->select('name AS text, element AS value')
-			->from('#__extensions')
-			->where('enabled >= 1')
-			->where('type =' . $db->quote('component'));
+			->select(
+				[
+					$db->quoteName('name', 'text'),
+					$db->quoteName('element', 'value'),
+				]
+			)
+			->from($db->quoteName('#__extensions'))
+			->where(
+				[
+					$db->quoteName('enabled') . ' >= 1',
+					$db->quoteName('type') . ' = ' . $db->quote('component'),
+				]
+			);
 
 		$items = $db->setQuery($query)->loadObjectList();
 
diff --git a/libraries/src/Form/Field/ContenttypeField.php b/libraries/src/Form/Field/ContenttypeField.php
index 2ef6764b7b59e..6b7a63164f98e 100644
--- a/libraries/src/Form/Field/ContenttypeField.php
+++ b/libraries/src/Form/Field/ContenttypeField.php
@@ -65,10 +65,15 @@ protected function getOptions()
 		$lang = Factory::getLanguage();
 		$db    = Factory::getDbo();
 		$query = $db->getQuery(true)
-			->select('a.type_id AS value, a.type_title AS text, a.type_alias AS alias')
-			->from('#__content_types AS a')
-
-			->order('a.type_title ASC');
+			->select(
+				[
+					$db->quoteName('a.type_id', 'value'),
+					$db->quoteName('a.type_title', 'text'),
+					$db->quoteName('a.type_alias', 'alias'),
+				]
+			)
+			->from($db->quoteName('#__content_types', 'a'))
+			->order($db->quoteName('a.type_title') . ' ASC');
 
 		// Get the options.
 		$db->setQuery($query);
diff --git a/libraries/src/Form/Field/EditorField.php b/libraries/src/Form/Field/EditorField.php
index f0992b2c68e13..bdcc184c62822 100644
--- a/libraries/src/Form/Field/EditorField.php
+++ b/libraries/src/Form/Field/EditorField.php
@@ -286,19 +286,27 @@ protected function getEditor()
 				// Get the database object.
 				$db = Factory::getDbo();
 
+				// Build the query.
+				$query = $db->getQuery(true)
+					->select($db->quoteName('element'))
+					->from($db->quoteName('#__extensions'))
+					->where(
+						[
+							$db->quoteName('element') . ' = :editor',
+							$db->quoteName('folder') . ' = ' . $db->quote('editors'),
+							$db->quoteName('enabled') . ' = 1',
+						]
+					);
+
+				// Declare variable before binding.
+				$element = '';
+				$query->bind(':editor', $element);
+				$query->setLimit(1);
+
 				// Iterate over the types looking for an existing editor.
 				foreach ($types as $element)
 				{
-					// Build the query.
-					$query = $db->getQuery(true)
-						->select('element')
-						->from('#__extensions')
-						->where('element = ' . $db->quote($element))
-						->where('folder = ' . $db->quote('editors'))
-						->where('enabled = 1');
-
-					// Check of the editor exists.
-					$query->setLimit(1);
+					// Check if the editor exists.
 					$db->setQuery($query);
 					$editor = $db->loadResult();