CVE-2026-16534: Import and export users and customers < 2.4.2 - Custom Role Privilege Escalation to Administrator via CSV Import

The Import and export users and customers WordPress plugin before 2.4.2 does not enforce WordPress's role-assignment and per-user edit permissions during CSV import, allowing a user holding only the user-creation capability to create an administrator account and to overwrite an existing administrator's password or email.