Drupal core - Moderately critical - Server-side request forgery - SA-CORE-2026-008

Install the latest version:

Drupal 11

• If you use Drupal 11.3.x, update to Drupal 11.3.12.
• If you use Drupal 11.2.x, update to Drupal 11.2.14.

Drupal 10

• If you use Drupal 10.6.x, update to Drupal 10.6.11.
• If you use Drupal 10.5.x, update to Drupal 10.5.12.

Drupal 11.1.x, Drupal 11.0.x, Drupal 10.4.x, and below are end-of-life and do not receive security coverage. (Drupal 8 and Drupal 9 have both reached end-of-life.)

Required site changes for URL discovery

Most users of the oEmbed functionality in Drupal likely use providers.json to define known providers (such as YouTube and Vimeo) for embedding content.

If you are using URL discovery, you now need to set a list of trusted oEmbed discovery hosts in settings.php.

This is an array containing a series of regular expressions for matching host names for discovery. It follows the same pattern as the existing trusted hosts settings.

Example:

// Only allow URL discovery from example.com.
$settings['media_oembed_discovery_trusted_host_patterns'] = [
  '^example\.com$',
];