CVE-2020-36157

An issue was discovered in the Ultimate Member plugin before 2.1.12 for WordPress, aka Unauthenticated Privilege Escalation via User Roles. Due to the lack of filtering on the role parameter that could be supplied during the registration process, an attacker could supply the role parameter with a WordPress capability (or any custom Ultimate Member role) and effectively be granted those privileges.

• https://wordpress.org/plugins/ultimate-member/#developersRelease Notes, Third Party Advisory
• https://wpscan.com/vulnerability/33f059c5-58e5-44b9-bb27-793c3cedef3bExploit, Third Party Advisory
• https://www.wordfence.com/blog/2020/11/critical-privilege-escalation-vulnerabilities-affect-100k-sites-using-ultimate-member-plugin/Exploit, Third Party Advisory
• https://wordpress.org/plugins/ultimate-member/#developersRelease Notes, Third Party Advisory
• https://wpscan.com/vulnerability/33f059c5-58e5-44b9-bb27-793c3cedef3bExploit, Third Party Advisory
• https://www.wordfence.com/blog/2020/11/critical-privilege-escalation-vulnerabilities-affect-100k-sites-using-ultimate-member-plugin/Exploit, Third Party Advisory

Published

Jan 4, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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