# Django 2.2.9.dev20191202104323 文档

# Django 2.2.2 release notes

June 3, 2019

Django 2.2.2 fixes security issues and several bugs in 2.2.1.

## CVE-2019-12308: AdminURLFieldWidget XSS

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`.

## Patched bundled jQuery for CVE-2019-11358: Prototype pollution

jQuery before 3.4.0, mishandles `jQuery.extend(true, {}, ...)` because of `Object.prototype` pollution. If an unsanitized source object contained an enumerable `__proto__` property, it could extend the native `Object.prototype`.

The bundled version of jQuery used by the Django admin has been patched to allow for the `select2` library's use of `jQuery.extend()`.

### Bugfixes

- Fixed a regression in Django 2.2 that stopped Show/Hide toggles working on dynamically added admin inlines (#30459).
- Fixed a regression in Django 2.2 where deprecation message crashes if `Meta.ordering` contains an expression (#30463).
- Fixed a regression in Django 2.2.1 where `SearchVector` generates SQL with a redundant `Coalesce` call (#30488).
- Fixed a regression in Django 2.2 where auto-reloader doesn't detect changes in `manage.py` file when using `StatReloader` (#30479).
- Fixed crash of `ArrayAgg` and `StringAgg` with `ordering` argument when used in a `Subquery` (#30315).
- Fixed a regression in Django 2.2 that caused a crash of auto-reloader when an exception with custom signature is raised (#30516).
- Fixed a regression in Django 2.2.1 where auto-reloader unnecessarily reloads translation files multiple times when using `StatReloader` (#30523).