diff --git a/src/wp-includes/post-functions.php b/src/wp-includes/post-functions.php
index 47db1dfcec..cbe464f967 100644
--- a/src/wp-includes/post-functions.php
+++ b/src/wp-includes/post-functions.php
@@ -2518,7 +2518,7 @@ function wp_trash_post( $post_id = 0 ) {
 	add_post_meta($post_id,'_wp_trash_meta_time', time());
 
 	$post['post_status'] = 'trash';
-	wp_insert_post($post);
+	wp_insert_post( wp_slash( $post ) );
 
 	wp_trash_post_comments($post_id);
 
@@ -2565,7 +2565,7 @@ function wp_untrash_post( $post_id = 0 ) {
 	delete_post_meta($post_id, '_wp_trash_meta_status');
 	delete_post_meta($post_id, '_wp_trash_meta_time');
 
-	wp_insert_post($post);
+	wp_insert_post( wp_slash( $post ) );
 
 	wp_untrash_post_comments($post_id);
 
diff --git a/tests/phpunit/tests/post/slashes.php b/tests/phpunit/tests/post/slashes.php
index 4a9f8be3ad..ee93abb7ad 100644
--- a/tests/phpunit/tests/post/slashes.php
+++ b/tests/phpunit/tests/post/slashes.php
@@ -129,4 +129,33 @@ class Tests_Post_Slashes extends WP_UnitTestCase {
 		$this->assertEquals( wp_unslash( $this->slash_6 ), $post->post_excerpt );
 	}
 
+	/**
+	 * @ticket 27550
+	 */
+	function test_wp_trash_untrash() {
+		$post = array(
+			'post_title'   => $this->slash_1,
+			'post_content' => $this->slash_3,
+			'post_excerpt' => $this->slash_5,
+		);
+		$id = wp_insert_post( wp_slash( $post ) );
+
+		$trashed = wp_trash_post( $id );
+		$this->assertNotEmpty( $trashed );
+
+		$post = get_post( $id );
+
+		$this->assertEquals( $this->slash_1, $post->post_title );
+		$this->assertEquals( $this->slash_3, $post->post_content );
+		$this->assertEquals( $this->slash_5, $post->post_excerpt );
+
+		$untrashed = wp_untrash_post( $id );
+		$this->assertNotEmpty( $untrashed );
+
+		$post = get_post( $id );
+
+		$this->assertEquals( $this->slash_1, $post->post_title );
+		$this->assertEquals( $this->slash_3, $post->post_content );
+		$this->assertEquals( $this->slash_5, $post->post_excerpt );
+	}
 }