Child issue of https://www.drupal.org/project/drupal/issues/3026443
\Drupal\Core\Security\PharExtensionInterceptor is incompatible with GeoIP and other libraries that use phar aliases or Phar::mapPhar()
The latest Drupal Security Update broke module geoip, as the geoip reader geoip2.phar is using Phar::mapPhar() and loading those mapped files is prevented by PharExtensionInterceptor.
That results in wsod on pages, where geoip is in use.
Error message:PHP Fatal error: main(): Failed opening required 'phar://geoip2.phar/vendor/autoload.php' ...
While work is in progress upstream, this issue exists for discussing solutions, if the PharExtensionInterceptor isn't ready for the next Drupal bugfix release.