Critical Privilege Escalation Vulnerabilities Affect 100K Sites Using Ultimate Member Plugin (www.wordfence.com)

On October 23, 2020, our Threat Intelligence team responsibly disclosed several vulnerabilities in Ultimate Member, a WordPress plugin installed on over 100,000 sites. These flaws made it possible for attackers to escalate their privileges to those of an administrator and take over a WordPress site. We initially reached out to the plugin’s developer on October …