The Nested Pages WordPress plugin <= 3.1.15 was vulnerable to Cross-Site Request Forgery via the `npBulkAction`s and `npBulkEdit` `admin_post` actions, which allowed attackers to trash or permanently purge arbitrary posts as well as changing their status, reassigning their ownership, and editing other metadata.
https://www.wordfence.com/vulnerability-advisories/
https://www.wordfence.com/blog/2021/08/nested-pages-pat%E2%80%A6on-vulnerability/