CVE-2026-11766: Unknown Ultimate Member

High severity, CVSS 8.0. EPSS: 0.4% chance of exploitation in the next 30 days.

The Ultimate Member WordPress plugin before 2.12.0 does not properly sanitise and escape the value of custom textarea profile fields before outputting it on user profiles, allowing authenticated users with Subscriber-level access and above to store JavaScript that executes when any user, including an administrator, views the affected profile.

Affected products

• Unknown Ultimate Member: before 2.12.0 (fixed in 2.12.0)

Published 2026-07-06. Last modified 2026-07-06.