CVE-2026-13157 [HIGH] – The Demo Import WordPress plugin through 1.1.3 does not validate the type of files upload

The Demo Import WordPress plugin through 1.1.3 does not validate the type of files uploaded during demo-content import (the WordPress file-type test is disabled), allowing high-privilege users (Administrator by default, including non-super-admin site administrators on multisite) to upload executable PHP files to the uploads directory.