Vulnerability CVE-2024-32882
Published: 2024-05-02

Description:
Wagtail is an open source content management system built on Django. In affected versions if a model has been made available for editing through the `wagtail.contrib.settings` module or `ModelViewSet`, and the `permission` argument on `FieldPanel` has been used to further restrict access to one or more fields of the model, a user with edit permission over the model but not the specific field can craft an HTTP POST request that bypasses the permission check on the individual field, allowing them to update its value. This vulnerability is not exploitable by an ordinary site visitor without access to the Wagtail admin, or by a user who has not been granted edit access to the model in question. The editing interfaces for pages and snippets are also unaffected. Patched versions have been released as Wagtail 6.0.3 and 6.1. Wagtail releases prior to 6.0 are unaffected. Users are advised to upgrade. Site owners who are unable to upgrade to a patched version can avoid the vulnerability as follows: 1.For models registered through `ModelViewSet`, register the model as a snippet instead; 2. For settings models, place the restricted fields in a separate settings model, and configure permission at the model level.

 References:
https://github.com/wagtail/wagtail/security/advisories/GHSA-w2v8-php4-p8hc
https://github.com/wagtail/wagtail/commit/ab2a5d82b4ee3c909d2456704388ccf90e367c9b
https://docs.wagtail.org/en/stable/extending/generic_views.html#modelviewset
https://docs.wagtail.org/en/stable/reference/contrib/settings.html
https://docs.wagtail.org/en/stable/reference/pages/panels.html#wagtail.admin.panels.FieldPanel.permission
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