Wagtail: Improper restriction handling on Documents and Images API

Wagtail is an open source content management system built on Django. Prior to 7.0.7, 7.3.2, and 7.4, the Documents and Images API incorrectly listed items in private collections. A user with access to the API could see the filename and name of documents and images in private collections. This vulnerability is fixed in 7.0.7, 7.3.2, and 7.4.