Vulnerability in WP User Manager – User Profile Builder & Membership — CVE-2026-120550
What to do now
Update WP User Manager – User Profile Builder & Membership to 2.10.3 or later.
Affected versions
- Everything up to and including 2.10.2
Affected: WP User Manager – User Profile Builder & Membership (plugin, wp-user-manager)
What the vulnerability is
The WP User Manager – Registration Form, Login Form, User Profile Builder & Member Directory plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'name (REST users endpoint) -> wp_users.display_name' parameter in all versions up to, and including, 2.10.2 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The payload is stored via the WordPress core REST endpoint POST /wp-json/wp/v2/users/me, which bypasses the plugin's own wpum_sanitize_text sanitizer applied on its front-end account form, making the save-time sanitization ineffective as a mitigation.
Sources
- https://downloads.wordpress.org/plugin/wp-user-manager.2.10.3.zip
- https://plugins.trac.wordpress.org/browser/wp-user-manager/tags/2.10.2/includes/fields/class-wpum-field.php#L627
- https://plugins.trac.wordpress.org/browser/wp-user-manager/tags/2.10.2/includes/fields/types/class-wpum-field-dropdown.php#L60
- https://plugins.trac.wordpress.org/browser/wp-user-manager/tags/2.10.2/includes/fields/wpum-fields-functions.php#L578
- https://plugins.trac.wordpress.org/browser/wp-user-manager/tags/2.10.2/templates/profiles/about.php#L51
- https://www.wordfence.com/threat-intel/vulnerabilities/id/3e9da4a7-89ba-426c-943a-e7bc79a04d7c?source=cve