The WP User Switch plugin for WordPress is vulnerable to authentication bypass in versions up to, and including, 1.0.2. This is due to incorrect authentication checking in the 'wpus_allow_user_to_admin_bar_menu' function with the 'wpus_who_switch' cookie value. This makes it possible for authenticated attackers, with subscriber-level permissions and above, to log in as any existing user on the site, such as an administrator, if they have access to the username.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Wp User Switch Plugin | — | Update wp-user-switch plugin to version 1.0.3, or a newer patched version | May 15, 2025 | Jun 4, 2023 |
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