The Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin plugin for WordPress is vulnerable to unauthorized profile picture updates due to a missing capability check on the wp_ajax_um_resize_image() and ajax_resize_image() functions in all versions up to, and including, 2.8.9. This makes it possible for authenticated attackers, with subscriber-level access and above, to update the profile pictures of other users.

The The Paid Membership Subscriptions – Effortless Memberships, Recurring Payments & Content Restriction plugin for WordPress is vulnerable to arbitrary shortcode execution in all versions up to, and including, 2.13.0. This is due to the software allowing users to execute an action that does not properly validate a value before running do_shortcode. This makes it possible for unauthenticated attackers to execute arbitrary shortcodes.

The Freemius SDK, as used by hundreds of WordPress plugin and theme developers, was vulnerable to Cross-Site Request Forgery and Information disclosure due to missing capability checks and nonce protection on the _get_debug_log, _get_db_option, and the _set_db_option functions in versions up to, and including 2.4.2. Any WordPress plugin or theme running a version of Freemius less than 2.4.3 is vulnerable.

The Paid Membership Subscriptions – Effortless Memberships, Recurring Payments & Content Restriction plugin for WordPress is vulnerable to Reflected Cross-Site Scripting due to the use of add_query_arg without appropriate escaping on the URL in all versions up to, and including, 2.12.8. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

The Registration Forms – User Registration Forms, Invitation-Based Registrations, Front-end User Profile, Login Form & Content Restriction plugin for WordPress is vulnerable to unauthorized arbitrary plugin installation and activation/deactivation due to missing capability checks on the pieregister_install_addon, pieregister_activate_addon and pieregister_deactivate_addon functions in all versions up to, and including, 3.8.3.4. This makes it possible for authenticated attackers, with Subscriber-level access and above, to install, activate and deactivate arbitrary plugins. As a result attackers might achieve code execution on the targeted server

The ARMember Premium plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 6.7. This is due to incorrectly implemented nonce validation function on multiple functions. This makes it possible for unauthenticated attackers to modify, or delete user meta and plugin options which can lead to limited privilege escalation.

The ARMember – Membership Plugin, Content Restriction, Member Levels, User Profile & User signup plugin for WordPress is vulnerable to Open Redirect in all versions up to, and including, 4.0.30. This is due to insufficient validation on the redirect url supplied via the redirect_to parameter. This makes it possible for unauthenticated attackers to redirect users to potentially malicious sites if they can successfully trick them into performing an action.

The Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Skype and Spotify URL parameters in all versions up to, and including, 2.8.4 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 Content Control – The Ultimate Content Restriction Plugin! Restrict Content, Create Conditional Blocks & More plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 2.1.0 via the API. This makes it possible for unauthenticated attackers to extract post titles, IDs, slugs, statuses and other information including post content. This includes published content only.

The s2Member – Best Membership Plugin for All Kinds of Memberships, Content Restriction Paywalls & Member Access Subscriptions plugin for WordPress is vulnerable to Information Exposure in all versions up to, and including, 230815 via the API. This makes it possible for unauthenticated attackers to see the contents of those posts and pages.