Login with YourMembership - YM SSO Login <= 1.1.7 - Missing Authorization to Unauthenticated Sensitive Information Exposure via 'moym_display_test_attributes'

The YourMembership Single Sign On – YM SSO Login plugin for WordPress is vulnerable to unauthorized access of data due to a missing capability check on the 'moym_display_test_attributes' function in all versions up to, and including, 1.1.7. This makes it possible for unauthenticated attackers to read the profile data of the latest SSO login.