This release addresses several security problems.
CVE-2022-24303: If the path to the temporary directory on Linux or macOS
contained a space, this would break removal of the temporary image file after
im.show() (and related actions), and potentially remove an unrelated file. This
has been present since PIL.
CVE-2022-22817: While Pillow 9.0 restricted top-level builtins available to
PIL.ImageMath.eval(), it did not prevent builtins available to lambda
expressions. These are now also restricted.
Pillow 9.0 added support for
xdg-open as an image viewer, but there have been
reports that the temporary image file was removed too quickly to be loaded into the
final application. A delay has been added.