The Registration Forms WordPress plugin before 3.8.2.3 does not properly validate the redirection URL when logging in and login out, leading to an Open Redirect vulnerability

The Registration Forms WordPress plugin before 3.8.1.3 does not have authorisation and CSRF when deleting users via an init action handler, allowing unauthenticated attackers to delete arbitrary users (along with their posts)

The Registration Forms – User profile, Content Restriction, Spam Protection, Payment Gateways, Invitation Codes WordPress plugin before 3.7.1.6 does not properly escape user data before using it in a SQL statement in the wp-json/pie/v1/login REST API endpoint, leading to an SQL injection.

The Registration Forms – User profile, Content Restriction, Spam Protection, Payment Gateways, Invitation Codes WordPress plugin before 3.1.7.6 has a flaw in the social login implementation, allowing unauthenticated attacker to login as any user on the site by only knowing their user ID or username

The Pie Register – User Registration Forms. Invitation based registrations, Custom Login, Payments WordPress plugin before 3.7.0.1 does not sanitise the invitaion_code GET parameter when outputting it in the Activation Code page, leading to a reflected Cross-Site Scripting issue.

The pie-register plugin before 3.1.2 for WordPress has SQL injection, a different issue than CVE-2018-10969.

SQL injection vulnerability in the Pie Register plugin before 3.0.10 for WordPress allows remote attackers to execute arbitrary SQL commands via the invitation codes grid.

Multiple SQL injection vulnerabilities in pie-register/pie-register.php in the Pie Register plugin before 2.0.19 for WordPress allow remote administrators to execute arbitrary SQL commands via the (1) select_invitaion_code_bulk_option or (2) invi_del_id parameter in the pie-invitation-codes page to wp-admin/admin.php.

Cross-site scripting (XSS) vulnerability in pie-register/pie-register.php in the Pie Register plugin before 2.0.19 for WordPress allows remote attackers to inject arbitrary web script or HTML via the invitaion_code parameter in a pie-register page to the default URI.

The Pie Register plugin before 2.0.14 for WordPress does not properly restrict access to certain functions in pie-register.php, which allows remote attackers to (1) add a user by uploading a crafted CSV file or (2) activate a user account via a verifyit action.