CVE-2026-79996: Unknown User Registration & Membership

High severity, CVSS 7.2. EPSS: 0.5% chance of exploitation in the next 30 days.

The User Registration & Membership WordPress plugin before 5.2.6 does not perform a capability check when saving its login settings, allowing authenticated users who have been granted a User Registration & Membership WordPress plugin before 5.2.6 management capability but not full administrator access to change arbitrary site options and escalate their privileges to administrator.

Affected products

• Unknown User Registration & Membership: before 5.2.6 (fixed in 5.2.6)

Published 2026-08-28. Last modified 2026-08-28.