The Paid Membership Subscriptions – Effortless Memberships, Recurring Payments & Content Restriction plugin for WordPress is vulnerable to Authentication Bypass in all versions up to, and including, 2.13.7. This is due to the pms_pb_payment_redirect_link function using the user-controlled value supplied via the 'pms_payment_id' parameter to authenticate users without any further identity validation. This makes it possible for unauthenticated attackers with knowledge of a valid payment ID to log in as any user who has made a purchase on the targeted site.

The Paid Membership Subscriptions – Effortless Memberships, Recurring Payments & Content Restriction plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 2.13.4 via the WordPress core search feature. This makes it possible for unauthenticated attackers to extract sensitive data from posts that have been restricted to higher-level roles such as logged-in 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 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.

Cross-Site Request Forgery (CSRF) vulnerability in Cozmoslabs Paid Member Subscriptions.This issue affects Paid Member Subscriptions: from n/a through 2.10.4.

The Paid Membership Subscriptions – Effortless Memberships, Recurring Payments & Content Restriction plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the creating_pricing_table_page function in all versions up to, and including, 2.11.1. This makes it possible for authenticated attackers, with subscriber access or higher, to create pricing tables.

The Paid Membership Subscriptions – Effortless Memberships, Recurring Payments & Content Restriction plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the pms_stripe_connect_handle_authorization_return function in all versions up to, and including, 2.11.1. This makes it possible for unauthenticated attackers to change the Stripe payment keys.

The Membership & Content Restriction – Paid Member Subscriptions WordPress plugin before 2.4.2 did not sanitise, validate or escape its order and orderby parameters before using them in SQL statement, leading to Authenticated SQL Injections in the Members and Payments pages.