URL Redirection to Untrusted Site ('Open Redirect') vulnerability in smp7, wp.Insider Simple Membership.This issue affects Simple Membership: from n/a through 4.4.1.

The Simple Membership plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the ‘environment_mode’ parameter in all versions up to, and including, 4.3.8 due to insufficient input sanitization and output escaping. 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.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in smp7, wp.Insider Simple Membership allows Reflected XSS.This issue affects Simple Membership: from n/a through 4.3.8.

A vulnerability, which was classified as critical, has been found in SourceCodester Simple Membership System 1.0. This issue affects some unknown processing of the file group_validator.php. The manipulation of the argument club_id leads to sql injection. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The identifier VDB-240869 was assigned to this vulnerability.

A vulnerability classified as critical was found in SourceCodester Simple Membership System 1.0. Affected by this vulnerability is an unknown functionality of the file club_validator.php. The manipulation of the argument club leads to sql injection. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. The identifier VDB-239869 was assigned to this vulnerability.

A vulnerability was found in SourceCodester Simple Membership System 1.0. It has been rated as critical. This issue affects some unknown processing of the file delete_member.php. The manipulation of the argument mem_id leads to sql injection. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-239255.

A vulnerability was found in SourceCodester Simple Membership System 1.0. It has been declared as critical. This vulnerability affects unknown code of the file account_edit_query.php. The manipulation of the argument admin_id leads to sql injection. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. VDB-239254 is the identifier assigned to this vulnerability.

A vulnerability was found in SourceCodester Simple Membership System 1.0. It has been classified as critical. This affects an unknown part of the file club_edit_query.php. The manipulation of the argument club_id leads to sql injection. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The identifier VDB-239253 was assigned to this vulnerability.

The Simple Membership plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the `list_type` parameter in versions up to, and including, 4.3.5 due to insufficient input sanitization and output escaping. Using this vulnerability, unauthenticated attackers could inject arbitrary web scripts into pages that are being executed if they can successfully trick a user into taking an action, such as clicking a malicious link.

The Simple Membership WordPress plugin before 4.2.2 does not validate and escape some of its shortcode attributes before outputting them back in the page, which could allow users with a role as low as contributor to perform Stored Cross-Site Scripting attacks which could be used against high privilege users such as admin.