CVE-2026-87759: Unknown Add User Autocomplete

High severity, CVSS 8.8. EPSS: 0.4% chance of exploitation in the next 30 days.

The Add User Autocomplete WordPress plugin before 1.2 does not perform any capability or nonce check before creating a pending site-membership invitation carrying a caller-supplied role, allowing any authenticated user, such as a subscriber, to grant themselves the administrator role on a multisite installation.

Affected products

• Unknown Add User Autocomplete: before 1.2 (fixed in 1.2)

Published 2026-09-12. Last modified 2026-09-14.