CVE-2023-3460
CriticalCVSS 9.8Exploitation Probability (EPSS)
Very high risk99th percentile - higher than 99% of all known CVEs
Summary
The Ultimate Member WordPress plugin before version 2.6.7 does not prevent visitors from creating user accounts with arbitrary capabilities, effectively allowing attackers to create administrator accounts at will.
Risk Assessment
This vulnerability poses a serious risk to organizations as it allows unauthorized users to gain full administrative privileges.
Recommendation
It is recommended to update the Ultimate Member plugin to version 2.6.7 or later to mitigate this vulnerability.
Other vulnerabilities in Ultimate Member WordPress plugin
See all- CVE-2026-19423High
The Ultimate Member WordPress plugin before version 2.13.0 does not validate a submitted role selection when it cannot resolve the set of roles a profile form permits, and screens the value against the site's registered role names rather than against the form's own allow-list. This allows unauthenticated users who register through the plugin's own form to grant themselves arbitrary capabilities and reach administrator-equivalent access.
- CVE-2025-13220Medium
The Ultimate Member plugin for WordPress in versions up to and including 2.11.0 is vulnerable to Stored Cross-Site Scripting via the plugin's shortcode attributes due to insufficient input sanitization and output escaping. This allows authenticated attackers with Contributor-level access or higher to inject arbitrary web scripts into pages.
Original NVD description (English source)
The Ultimate Member WordPress plugin before 2.6.7 does not prevent visitors from creating user accounts with arbitrary capabilities, effectively allowing attackers to create administrator accounts at will. This is actively being exploited in the wild.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS