CVE-2020-36155

An issue was discovered in the Ultimate Member plugin before 2.1.12 for WordPress, aka Unauthenticated Privilege Escalation via User Meta. An attacker could supply an array parameter for sensitive metadata, such as the wp_capabilities user meta that defines a user's role. During the registration process, submitted registration details were passed to the update_profile function, and any metadata was accepted, e.g., wp_capabilities[administrator] for Administrator access.

• CWE-269

• https://wordpress.org/plugins/ultimate-member/#developersRelease Notes, Third Party Advisory
• https://wpscan.com/vulnerability/cf13b0f8-5815-4d27-a276-5eff8985fc0bExploit, 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/cf13b0f8-5815-4d27-a276-5eff8985fc0bExploit, 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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