Ticket #50731: 50731.diff

src/wp-includes/kses.php

@@ -230 +230 @@
                         'border'   => true,
                         'height'   => true,
                         'hspace'   => true,
+                        'loading'  => true,
                         'longdesc' => true,
                         'vspace'   => true,
                         'src'      => true,

tests/phpunit/tests/kses.php

@@ -767 +767 @@
                         ),
                         array(
                                 'img',
+                                'loading="lazy"',
+                                'loading="lazy"',
+                        ),
+                        array(
+                                'img',
                                 'onerror=alert(1)',
                                 '',
                         ),
@@ -1352 +1357 @@
                         ),
                 );
         }
+
+        /**
+         * Test filtering a standard img tag.
+         *
+         * @ticket 50731
+         */
+        function test_wp_kses_img_tag_standard_attributes() {
+                $html = array(
+                        '<img',
+                        'loading="lazy"',
+                        'src="https://example.com/img.jpg"',
+                        'width="1000"',
+                        'height="1000"',
+                        'alt=""',
+                        'class="wp-image-1000"',
+                        '/>',
+                );
+
+                $html = implode( ' ', $html );
+
+                $this->assertSame( $html, wp_kses_post( $html ) );
+        }
 }