The Documents and Images [API V2](https://docs.wagtail.org/en/stable/advanced topics/api/index.html) incorrectly listed items in descendants of private collections, which should inherit the view restrictions defined on their ancestors. A user with access to the API could see the filename and name of documents and images in these descendant collections.

Patched versions have been released as Wagtail 7.0.9, 7.3.4, 7.4.3 and 8.0rc2.

Site owners using Wagtail's API can avoid the vulnerability by adding [authentication](https://docs.wagtail.org/en/stable/advanced topics/api/v2/configuration.html#authentication) to the Documents and Images APIs.

Many thanks to Ta Duc Thien for reporting this issue.

If you have any questions or comments about this advisory: