diff --git a/includes/class-wc-download-handler.php b/includes/class-wc-download-handler.php
index e0cd94e5c36..e3422560511 100644
--- a/includes/class-wc-download-handler.php
+++ b/includes/class-wc-download-handler.php
@@ -269,10 +269,9 @@ class WC_Download_Handler {
 			str_replace( 'https:', 'http:', site_url( '/', 'http' ) ) => ABSPATH,
 		);
 
-		$count            = 0;
-		$file_path        = str_replace( array_keys( $replacements ), array_values( $replacements ), $file_path, $count );
+		$file_path        = str_replace( array_keys( $replacements ), array_values( $replacements ), $file_path );
 		$parsed_file_path = wp_parse_url( $file_path );
-		$remote_file      = null === $count || 0 === $count; // Remote file only if there were no replacements.
+		$remote_file      = true;
 
 		// Paths that begin with '//' are always remote URLs.
 		if ( '//' === substr( $file_path, 0, 2 ) ) {
@@ -292,7 +291,7 @@ class WC_Download_Handler {
 			$file_path   = realpath( WP_CONTENT_DIR . substr( $file_path, 11 ) );
 
 			// Check if we have an absolute path.
-		} elseif ( ( ! isset( $parsed_file_path['scheme'] ) || ! in_array( $parsed_file_path['scheme'], array( 'http', 'https', 'ftp' ), true ) ) && isset( $parsed_file_path['path'] ) ) {
+		} elseif ( ( ! isset( $parsed_file_path['scheme'] ) || ! in_array( $parsed_file_path['scheme'], array( 'http', 'https', 'ftp' ), true ) ) && isset( $parsed_file_path['path'] ) && file_exists( $parsed_file_path['path'] ) ) {
 			$remote_file = false;
 			$file_path   = $parsed_file_path['path'];
 		}
diff --git a/includes/class-wc-product-download.php b/includes/class-wc-product-download.php
index 03fbba9134b..3b4344bd9be 100644
--- a/includes/class-wc-product-download.php
+++ b/includes/class-wc-product-download.php
@@ -95,16 +95,22 @@ class WC_Product_Download implements ArrayAccess {
 	 * @return boolean
 	 */
 	public function is_allowed_filetype() {
-		$file_path        = $this->get_file();
-		$parsed_file_path = WC_Download_Handler::parse_file_path( $file_path );
+		$file_path = $this->get_file();
 
 		// File types for URL-based files located on the server should get validated.
-		$is_file_on_server = ! $parsed_file_path['remote_file'];
+		$is_file_on_server = false;
+		if ( false !== stripos( $file_path, network_site_url( '/', 'https' ) ) ||
+			false !== stripos( $file_path, network_site_url( '/', 'http' ) ) ||
+			false !== stripos( $file_path, site_url( '/', 'https' ) ) ||
+			false !== stripos( $file_path, site_url( '/', 'http' ) )
+		) {
+			$is_file_on_server = true;
+		}
 
 		if ( ! $is_file_on_server && 'relative' !== $this->get_type_of_file_path() ) {
 			return true;
 		}
-		return ( ! $is_file_on_server && ! $this->get_file_extension() ) || in_array( $this->get_file_type(), $this->get_allowed_mime_types(), true );
+		return ! $this->get_file_extension() || in_array( $this->get_file_type(), $this->get_allowed_mime_types(), true );
 	}
 
 	/**
@@ -171,10 +177,6 @@ class WC_Product_Download implements ArrayAccess {
 		if ( preg_match( '#^//+(/[^/].+)$#i', $value, $matches ) ) {
 			$value = $matches[1];
 		}
-
-		$parsed_file_path = WC_Download_Handler::parse_file_path( $value );
-		$value            = $parsed_file_path['file_path'];
-
 		switch ( $this->get_type_of_file_path( $value ) ) {
 			case 'absolute':
 				$this->data['file'] = esc_url_raw( $value );
diff --git a/tests/legacy/unit-tests/customer/functions.php b/tests/legacy/unit-tests/customer/functions.php
index 0438c646211..41746df84e0 100644
--- a/tests/legacy/unit-tests/customer/functions.php
+++ b/tests/legacy/unit-tests/customer/functions.php
@@ -152,7 +152,7 @@ class WC_Tests_Customer_Functions extends WC_Unit_Test_Case {
 
 		// Test download permissions.
 		$prod_download = new WC_Product_Download();
-		$prod_download->set_file( WC_ABSPATH . 'assets/images/help.png' );
+		$prod_download->set_file( plugin_dir_url( __FILE__ ) . '/assets/images/help.png' );
 		$prod_download->set_id( 'download' );
 
 		$product = new WC_Product_Simple();
@@ -382,7 +382,7 @@ class WC_Tests_Customer_Functions extends WC_Unit_Test_Case {
 		$customer_id = wc_create_new_customer( 'test@example.com', 'testuser', 'testpassword' );
 
 		$prod_download = new WC_Product_Download();
-		$prod_download->set_file( WC_ABSPATH . 'assets/images/help.png' );
+		$prod_download->set_file( plugin_dir_url( __FILE__ ) . '/assets/images/help.png' );
 		$prod_download->set_id( 1 );
 
 		$product = new WC_Product_Simple();
diff --git a/tests/php/includes/class-wc-product-download-test.php b/tests/php/includes/class-wc-product-download-test.php
deleted file mode 100644
index a1c17f39e1c..00000000000
--- a/tests/php/includes/class-wc-product-download-test.php
+++ /dev/null
@@ -1,50 +0,0 @@
-<?php
-
-/**
- * Class WC_Product_Download_Test.
- */
-class WC_Product_Download_Test extends WC_Unit_Test_Case {
-
-	/**
-	 * Helper utitility to get mocked object of WC_Product_Download class.
-	 *
-	 * @return WC_Product_Download
-	 */
-	public function get_sut_with_get_file() {
-		return $this->getMockBuilder( WC_Product_Download::class )
-					->setMethods( array( 'get_file' ) )
-					->getMock();
-	}
-
-	/**
-	 * Test when file appears remote but is local.
-	 */
-	public function test_is_allowed_filetype_when_file_with_false_query_params() {
-		$download = $this->get_sut_with_get_file();
-		$payload = trailingslashit( site_url( '/' ) ) . 'non_exists/?/../../wp-config.php';
-		$download->method( 'get_file' )->willReturn( $payload );
-		$this->assertFalse( $download->is_allowed_filetype() );
-	}
-
-	/**
-	 * Test when file appears remote, but is local and tries to appear remote by having characters to be stripped by esc_url_raw.
-	 */
-	public function test_is_allowed_filetype_when_file_with_quote_and_false_query_params() {
-		$download = $this->get_sut_with_get_file();
-		$payload = trailingslashit( site_url( '/' ) ) . '"non_exists/?/../../foo.php';
-		$download->method( 'get_file' )->willReturn( $payload );
-		$this->assertFalse( $download->is_allowed_filetype() );
-	}
-
-	/**
-	 * Test when file has invalid scheme.
-	 */
-	public function test_is_allowed_filetype_when_file_with_url_escapable_scheme() {
-		$download = $this->get_sut_with_get_file();
-		$payload = trailingslashit( site_url( '/' ) );
-		$payload = str_replace( 'http', 'http;', $payload );
-		$payload = trailingslashit( $payload ) . 'wp-config.php?/../../foo'; // http;//example.com/wp-config.php?/../../foo.
-		$download->method( 'get_file' )->willReturn( $payload );
-		$this->assertFalse( $download->is_allowed_filetype() );
-	}
-}