Wagtail: Improper restriction handling on descendant collections in Documents and Images API

Overview

Impact

The Documents and Images API V2 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.

Patches

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

Workarounds

Site owners using Wagtail's API can avoid the vulnerability by adding authentication to the Documents and Images APIs.

Acknowledgements

Many thanks to Ta Duc Thien for reporting this issue.

For more information

If you have any questions or comments about this advisory:

• Visit Wagtail's support channels
• Email us at [email protected] (view our security policy for more information).

Affected packages

• wagtail < 7.0.9
• wagtail >= 7.1, < 7.3.4
• wagtail >= 7.4, < 7.4.3
• wagtail = 8.0rc1

Remediation

Upgrade to a patched release:

• wagtail 7.0.9
• wagtail 7.3.4
• wagtail 7.4.3
• wagtail 8.0rc2