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CVE-2020-36157

CRITICAL 9.8 CVSS 3.1
Published
January 4, 2021
Last modified
June 17, 2026
NVD status
Modified
Reported by
cve@mitre.org
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Description

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.

Affected WordPress components

  • Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin Plugin · ultimate-member
    Confirmed match Active
    Versions not specified
    View on WordPress.org

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • n/a n/a — Versions not specified
  • ultimatemember ultimate_member — Before 2.1.12

References

  • wordpress.org https://wordpress.org/plugins/ultimate-member/#developers Release Notes, Third Party Advisory
  • wpscan.com https://wpscan.com/vulnerability/33f059c5-58e5-44b9-bb27-793c3cedef3b Exploit, Third Party Advisory
  • www.wordfence.com https://www.wordfence.com/blog/2020/11/critical-privilege-escalation-vulnerabilities-affect-100k-sites-using-ultimate-member-plugin/ Exploit, Third Party Advisory
  • nvd.nist.gov Official NVD record