The Ultimate Member plugin for WordPress is vulnerable to privilege escalation in versions up to, and including, 2.6.6. This is due to the plugin using a predefined list of user meta keys that are banned which can be bypassed via a few method like adding slashes to the user meta key. This makes it possible for unauthenticated attackers to register on a site as an administrator.
CVE-2023-3460 is a critical severity with CVSS 9.8 Privilege Escalation issue affecting the Plugin Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin. It affects Versions up to 2.6.6 and is fixed in 2.6.7.
CVE-2023-3460 is tracked for the Plugin Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin as critical severity with CVSS 9.8. The affected range is Versions up to 2.6.6. Update Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin to 2.6.7 or newer where that version is compatible with the site.
| Software Type | Plugin |
|---|---|
| Software Slug |
ultimate-member
View on wordpress.org
|
| CVE | CVE-2023-3460 |
| Patched Versions |
2.6.7
|
| Affected Versions |
Versions up to 2.6.6
|
These internal links group the same WordPress plugin by CVE, issue type, severity, and patch status so operators and search engines can connect the full vulnerability cluster.
Ultimate Member <= 2.1.11 - Unauthenticated Privilege Escalation via User Roles
Ultimate Member <= 2.1.11 - Unauthenticated Privilege Escalation via User Meta
Ultimate Member <= 2.1.11 - Authenticated Privilege Escalation via Profile Update
Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin 2.1.3 - 2.8.2 - Unauthenticated SQL Injection
Ultimate Member <= 2.0.39 - Privilege Escalation
Ultimate Member <= 2.0.39 - Cross-Site Request Forgery
Ultimate Member <= 2.0.6 - Multiple Cross-Site Request Forgery Issues
Ultimate Member <= 2.11.2 - Authenticated (Contributor+) Sensitive Information Exposure to Account Takeover via Shortcode Template Tag
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