diff --git src/wp-includes/class-wp-customize-setting.php src/wp-includes/class-wp-customize-setting.php
index 1e29bdd..94e7ded 100644
--- src/wp-includes/class-wp-customize-setting.php
+++ src/wp-includes/class-wp-customize-setting.php
@@ -657,11 +657,13 @@ class WP_Customize_Setting {
 			 * functions for available hooks.
 			 *
 			 * @since 3.4.0
+			 * @since 4.6.0 Added the `$this` setting instance as the second param.
 			 *
-			 * @param mixed $default The setting default value. Default empty.
+			 * @param mixed                $default The setting default value. Default empty.
+			 * @param WP_Customize_Setting $this    The setting instance.
 			 */
-			$value = apply_filters( "customize_value_{$id_base}", $value );
-		} else if ( $this->is_multidimensional_aggregated ) {
+			$value = apply_filters( "customize_value_{$id_base}", $value, $this );
+		} elseif ( $this->is_multidimensional_aggregated ) {
 			$root_value = self::$aggregated_multidimensionals[ $this->type ][ $id_base ]['root_value'];
 			$value = $this->multidimensional_get( $root_value, $this->id_data['keys'], $this->default );
 		} else {
diff --git tests/phpunit/tests/customize/setting.php tests/phpunit/tests/customize/setting.php
index 380d2d6..c2ff7f5 100644
--- tests/phpunit/tests/customize/setting.php
+++ tests/phpunit/tests/customize/setting.php
@@ -277,8 +277,19 @@ class Tests_WP_Customize_Setting extends WP_UnitTestCase {
 		$this->custom_type_data_saved[ $name ] = $value;
 	}
 
-	function custom_type_value_filter( $default ) {
+	/**
+	 * Filter for `customize_value_{$id_base}`.
+	 *
+	 * @param mixed $default
+	 * @param WP_Customize_Setting $setting
+	 *
+	 * @return mixed|null
+	 */
+	function custom_type_value_filter( $default, $setting = null ) {
 		$name = preg_replace( '/^customize_value_/', '', current_filter() );
+		$this->assertInstanceOf( 'WP_Customize_Setting', $setting );
+		$id_data = $setting->id_data();
+		$this->assertEquals( $name, $id_data['base'] );
 		return $this->custom_type_getter( $name, $default );
 	}
 
@@ -314,7 +325,7 @@ class Tests_WP_Customize_Setting extends WP_UnitTestCase {
 		$default = "default_value_{$name}";
 		$setting = new WP_Customize_Setting( $this->manager, $name, compact( 'type', 'default' ) );
 		// Note: #29316 will allow us to have one filter for all settings of a given type, which is what we need.
-		add_filter( "customize_value_{$name}", array( $this, 'custom_type_value_filter' ) );
+		add_filter( "customize_value_{$name}", array( $this, 'custom_type_value_filter' ), 10, 2 );
 		$this->assertEquals( $this->undefined, $this->custom_type_getter( $name, $this->undefined ) );
 		$this->assertEquals( $default, $setting->value() );
 		$this->assertTrue( $setting->preview() );
@@ -330,7 +341,7 @@ class Tests_WP_Customize_Setting extends WP_UnitTestCase {
 		$this->custom_type_setter( $name, $initial_value );
 		$setting = new WP_Customize_Setting( $this->manager, $name, compact( 'type', 'default' ) );
 		// Note: #29316 will allow us to have one filter for all settings of a given type, which is what we need.
-		add_filter( "customize_value_{$name}", array( $this, 'custom_type_value_filter' ) );
+		add_filter( "customize_value_{$name}", array( $this, 'custom_type_value_filter' ), 10, 2 );
 		$this->assertEquals( $initial_value, $this->custom_type_getter( $name, $this->undefined ) );
 		$this->assertEquals( $initial_value, $setting->value() );
 		$this->assertFalse( $setting->preview(), "Preview for $setting->id should not apply because existing type without an override." );
@@ -350,7 +361,7 @@ class Tests_WP_Customize_Setting extends WP_UnitTestCase {
 		$default = "default_value_{$name}";
 		$setting = new WP_Customize_Setting( $this->manager, $name, compact( 'type', 'default' ) );
 		// Note: #29316 will allow us to have one filter for all settings of a given type, which is what we need.
-		add_filter( "customize_value_{$name}", array( $this, 'custom_type_value_filter' ) );
+		add_filter( "customize_value_{$name}", array( $this, 'custom_type_value_filter' ), 10, 2 );
 		$this->assertEquals( $this->undefined, $this->custom_type_getter( $name, $this->undefined ) );
 		$this->assertEquals( $default, $setting->value() );
 		$this->assertTrue( $setting->preview() );
@@ -366,7 +377,7 @@ class Tests_WP_Customize_Setting extends WP_UnitTestCase {
 		$this->custom_type_setter( $name, $initial_value );
 		$setting = new WP_Customize_Setting( $this->manager, $name, compact( 'type', 'default' ) );
 		// Note: #29316 will allow us to have one filter for all settings of a given type, which is what we need.
-		add_filter( "customize_value_{$name}", array( $this, 'custom_type_value_filter' ) );
+		add_filter( "customize_value_{$name}", array( $this, 'custom_type_value_filter' ), 10, 2 );
 		$this->assertEquals( $initial_value, $this->custom_type_getter( $name, $this->undefined ) );
 		$this->assertEquals( $initial_value, $setting->value() );
 		$this->assertTrue( $setting->preview() );