# WP User Manager – Registration Form, Login Form, User Profile Builder & Member Directory <= 2.9.24 - Unauthenticated Site Access Restriction Bypass via REST API Prefix in Request URI

- **ID:** WPSEC-2026-1005
- **Plugin:** WP User Manager – Registration Form, Login Form, User Profile Builder & Member Directory (`wp-user-manager`), https://wordpress.org/plugins/wp-user-manager/
- **Affected versions:** from 2.9.8 before 2.9.25
- **Fixed in:** 2.9.25 (Update to 2.9.25 or later.)
- **Severity:** Medium 5.3 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)
- **Weakness:** CWE-288
- **Usage among sites WPSec scans:** plugin Low, affected versions Low (as of 2026-10-15)
- **Attack surface analysis:** https://attacksurface.wpsec.com/plugin/wp-user-manager
- **Fix released:** 2026-10-14
- **Published:** 2026-10-15
- **URL:** https://wpsec.com/vuln/WPSEC-2026-1005/

## Description

The WP User Manager plugin for WordPress is vulnerable to a bypass of its "Prevent site access to visitors" protection via the request URI in versions 2.9.8 up to, and including, 2.9.24. This is due to the wpum_is_rest_api_request() function treating any request whose URI contains the REST API prefix (such as '/wp-json/') anywhere, including in the query string, as a REST API request, which causes wpum_prevent_entire_site() to skip its login redirect. This makes it possible for unauthenticated attackers to view front-end content on sites set up to be private when the site access restriction is enabled.

## References

- https://wpsec.com/vuln/WPSEC-2026-1005/
- https://plugins.svn.wordpress.org/wp-user-manager/tags/2.9.25/
- https://wordpress.org/plugins/wp-user-manager/

Source: WPSec, https://wpsec.com/vuln/WPSEC-2026-1005/

License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Free to use, share and adapt, also commercially, if you credit WPSec and link to this advisory.