Fixed second security issue in image uploading. Disclosure and release forthcoming.

                file = BytesIO(data['content'])

        try:

            # load() is the only method that can spot a truncated JPEG,

            #  but it cannot be called sanely after verify()

            trial_image = Image.open(file)

            trial_image.load()

            # Since we're about to use the file again we have to reset the

            # file object if possible.

            if hasattr(file, 'seek') and callable(file.seek):

                file.seek(0)

            # verify() is the only method that can spot a corrupt PNG,

            #  but it must be called immediately after the constructor

            trial_image = Image.open(file)

            trial_image.verify()

            # load() could spot a truncated JPEG, but it loads the entire

            # image in memory, which is a DoS vector. See #3848 and #18520.

            # verify() must be called immediately after the constructor.

            Image.open(file).verify()

        except ImportError:

            # Under PyPy, it is possible to import PIL. However, the underlying

            # _imaging C module isn't available, so an ImportError will be