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().
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().