diff --git a/src/wp-admin/includes/class-wp-media-list-table.php b/src/wp-admin/includes/class-wp-media-list-table.php
index 3a61f159bc..d7b17c5685 100644
--- a/src/wp-admin/includes/class-wp-media-list-table.php
+++ b/src/wp-admin/includes/class-wp-media-list-table.php
@@ -395,7 +395,7 @@ class WP_Media_List_Table extends WP_List_Table {
 			<span class="screen-reader-text"><?php _e( 'File name:' ); ?> </span>
 			<?php
 			$file = get_attached_file( $post->ID );
-			echo wp_basename( $file );
+			echo esc_html( wp_basename( $file ) );
 			?>
 		</p>
 		<?php
diff --git a/src/wp-includes/post-template.php b/src/wp-includes/post-template.php
index 6ddc4b34ed..dd83095fcc 100644
--- a/src/wp-includes/post-template.php
+++ b/src/wp-includes/post-template.php
@@ -1475,7 +1475,7 @@ function wp_get_attachment_link( $id = 0, $size = 'thumbnail', $permalink = fals
 	 * @param bool         $icon      Whether to include an icon. Default false.
 	 * @param string|bool  $text      If string, will be link text. Default false.
 	 */
-	return apply_filters( 'wp_get_attachment_link', "<a href='$url'>$link_text</a>", $id, $size, $permalink, $icon, $text );
+	return apply_filters( 'wp_get_attachment_link', "<a href='" . esc_url( $url ) . "'>$link_text</a>", $id, $size, $permalink, $icon, $text );
 }
 
 /**