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CVE-2020-36155

CRITICAL 9.8 CVSS 3.1
Published
January 4, 2021
Last modified
June 17, 2026
NVD status
Modified
Reported by
cve@mitre.org
Weakness
CWE-269
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 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.

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/cf13b0f8-5815-4d27-a276-5eff8985fc0b 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