Wagtail has improper permission handling when deleting form submissions

Impact

A CMS user with limited access to form pages could delete submissions to form pages they don't have access to by crafting a form submission to delete submissions on a page they do have access to for submissions they don't.

The vulnerability is not exploitable by an ordinary site visitor without access to the Wagtail admin.

Patches

Patched versions have been released as Wagtail 7.0.7 and 7.3.2. The new 7.4 LTS feature release also incorporates this fix.

Workarounds

No workaround is available.

Acknowledgements

Wagtail thanks Vishal Shukla @shukla304 for reporting this issue.

For more information

If there are any questions or comments about this advisory:

• Visit Wagtail's support channels
• Send an email to security@wagtail.org (view the security policy for more information).