diff --git a/wp-admin/includes/image.php b/wp-admin/includes/image.php
index 84a096549d..aeed988ae6 100644
--- a/wp-admin/includes/image.php
+++ b/wp-admin/includes/image.php
@@ -408,12 +408,14 @@ function wp_read_image_metadata( $file ) {
 		}
 	}
 
-	foreach ( $meta as &$value ) {
-		if ( is_string( $value ) ) {
-			$value = wp_kses_post( $value );
+	foreach ( $meta['keywords'] as $key => $keyword ) {
+		if ( ! seems_utf8( $keyword ) ) {
+			$meta['keywords'][ $key ] = utf8_encode( $keyword );
 		}
 	}
 
+	$meta = wp_kses_post_deep( $meta );
+
 	/**
 	 * Filter the array of meta data read from an image's exif data.
 	 *
diff --git a/wp-includes/kses.php b/wp-includes/kses.php
index 0eee02ee2d..527c4cb10f 100644
--- a/wp-includes/kses.php
+++ b/wp-includes/kses.php
@@ -1581,6 +1581,19 @@ function wp_kses_post( $data ) {
 	return wp_kses( $data, 'post' );
 }
 
+/**
+ * Navigates through an array, object, or scalar, and sanitizes content for
+ * allowed HTML tags for post content.
+ *
+ * @since 4.4.2
+ *
+ * @param mixed $value The array or string to filter.
+ * @return mixed $value The filtered content.
+ */
+function wp_kses_post_deep( $data ) {
+	return map_deep( $data, 'wp_kses_post' );
+}
+
 /**
  * Strips all of the HTML in the content.
  *
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 7a32c920e8..3c8a1b64b5 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.5-alpha-36427';
+$wp_version = '4.5-alpha-36429';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.