Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin < 2.12.1 - Unauthenticated Privilege Escalation

7.3
Incorrect Privilege Assignment
CVE CVE-2026-12251
CVSS 7.3 (High)
Publicly Published August 5, 2026
Last Updated August 14, 2026
Researcher Haitam Lazaar

Description

The Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin plugin for WordPress is vulnerable to Privilege Escalation in all versions up to 2.12.1 (exclusive). This is due to the plugin not restricting ultimate member roles during registration. This makes it possible for unauthenticated attackers to register with select UM roles.

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Vulnerability Details for Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin

Software Type Plugin
Software Slug ultimate-member (view on wordpress.org)
Patched? Yes
Remediation Update to version 2.12.1, or a newer patched version
Affected Version
  • < 2.12.1
Patched Version
  • 2.12.1

Recent vulnerabilities in Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin

# Title CVE ID CVSS Researchers Date
1 Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin < 2.13.0 - Unauthenticated Unapproved Comment and Private Profile Data Disclosure CVE-2026-19251 5.3 Alessandro Greco, Giovambattista Ianni August 31, 2026
2 Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin 2.6.7 - 2.12.1 - Unauthenticated Privilege Escalation CVE-2026-19423 7.3 Jakub Herman August 28, 2026
3 Ultimate Member <= 2.12.1 - Authenticated (Subscriber+) Stored Cross-Site Scripting via Textarea Profile Field with HTML Support (DOM Gadget via id Attribute) CVE-2026-18547 6.4 tiborisaak August 24, 2026
4 Ultimate Member <= 2.11.4 - Authenticated (Subscriber+) Stored Cross-Site Scripting via Non-HTML Custom Textarea Profile Field CVE-2026-8489 6.4 daroo July 2, 2026
5 Ultimate Member <= 2.11.4 - Authenticated (Contributor+) Account Takeover via Password Reset Link Disclosure CVE-2026-7761 8.8 tiborisaak June 23, 2026
6 Ultimate Member <= 2.11.1 - Authenticated (Subscriber+) Stored Cross-Site Scripting via DOM Gadgets CVE-2025-15064 6.4 tiborisaak April 3, 2026
7 Ultimate Member <= 2.11.2 - Authenticated (Contributor+) Sensitive Information Exposure to Account Takeover via Shortcode Template Tag CVE-2026-4248 8.0 HDH March 27, 2026
8 Ultimate Member <= 2.11.1 - Reflected Cross-Site Scripting via Filter Parameters CVE-2026-1404 6.1 Dmitrii Ignatyev February 17, 2026
9 Ultimate Member <= 2.11.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes CVE-2025-13220 6.4 Muhammad Yudha - DJ December 20, 2025
10 Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin <= 2.11.0 - Unauthenticated Sensitive Information Exposure CVE-2025-12492 5.3 Athiwat Tiprasaharn (Jitlada) December 19, 2025

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