Ticket #30421: aria-kses-2.diff

src/wp-includes/kses.php

@@ -788 +788 @@
                 } // if !is_array($current)
         } // foreach
 
+        // Allow attr-* attributes.
+        foreach ( $attrarr as $attr ) {
+                if ( 0 === strpos( $attr['name'], 'aria-' ) ) {
+                        $attr2 .= $arreach['whole'];
+                }
+        }
+
         // Remove any "<" or ">" characters
         $attr2 = preg_replace('/[<>]/', '', $attr2);