Issue #3274757 by chr.fritsch: Check input for URL before calling oEmbed

# Drupal editor configuration normalization

# @see http://editorconfig.org/

# This is the top-most .editorconfig file; do not search in parent directories.

root = true

# All files.

[*]

end_of_line = LF

indent_style = space

indent_size = 2

charset = utf-8

trim_trailing_whitespace = true

insert_final_newline = true

ij_any_catch_on_new_line = true

[composer.json]

indent_size = 4

[*.md]

max_line_length = 120

   */

  public static function isApplicable($input, array $definition) {

    $input = strip_tags($input);

    if (!\Drupal::service('path.validator')->isValid($input)) {

      return FALSE;

    }

    /** @var \Drupal\media\OEmbed\UrlResolverInterface $resolver */

    $resolver = \Drupal::service('media.oembed.url_resolver');