June 3, 2019
Django 1.11.21 fixes a security issue in 1.11.20.
The clickable “Current URL” link generated by AdminURLFieldWidget displayed
the provided value without validating it as a safe URL. Thus, an unvalidated
value stored in the database, or a value provided as a URL query parameter
payload, could result in an clickable JavaScript link.
AdminURLFieldWidget now validates the provided value using
URLValidator before displaying the clickable
link. You may customize the validator by passing a validator_class kwarg to
AdminURLFieldWidget.__init__(), e.g. when using
formfield_overrides.
Jul 27, 2022