CVE-2026-16534: Unknown Import And Export Users And Customers

Critical severity, CVSS 9.1. EPSS: 0.4% chance of exploitation in the next 30 days.

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.

Affected products

• Unknown Import And Export Users And Customers: before 2.4.2 (fixed in 2.4.2)

Published 2026-08-03. Last modified 2026-08-26.