Drupal maintainers have fixed many vulnerabilities in Drupal 7 and 8, including some flaws rated as “critical.”
The second vulnerability rated as critical affects Drupal 8, it could be exploited by users who have permission to post comments to view content and comments they should not be able to access. The flaw could also allow users to add comments to the content that should not be able to access.
The Drupal team also fixed two moderately critical vulnerabilities in Drupal 7 and other two in Drupal 8. The flaws in Drupal 7:
while the vulnerabilities in Drupal 8 are:
(Security Affairs – Drupal, CMS)