CVE-2023-3460: Ultimatemember Ultimate Member

Critical severity, CVSS 9.8. EPSS: 72.3% chance of exploitation in the next 30 days.

The Ultimate Member WordPress plugin before 2.6.7 does not prevent visitors from creating user accounts with arbitrary capabilities, effectively allowing attackers to create administrator accounts at will. This is actively being exploited in the wild.

Affected products

• Ultimatemember Ultimate Member: before 2.6.7 (fixed in 2.6.7)

Published 2023-07-04. Last modified 2026-06-17.