The Smart Trim module allows site builders additional control with text summary fields.
The module doesn't sufficiently filter text when certain options are selected.
This vulnerability is mitigated by the fact that an attacker must have a role with the ability to create content on the site when certain options are selected for the trimmed output.
Install the latest version:
- If you use the Smart Trim module for Drupal 8.x, upgrade to smart_trim-8.x-1.2
Also see the Smart Trim project page.
- Damien McKenna of the Drupal Security Team