The Admin Columns Free WordPress plugin before 4.3 and Admin Columns Pro WordPress plugin before 5.5.1, rendered input on the posted pages with improper input validation on the value passed into the field 'Label' parameter, by taking this as an advantage an authenticated attacker can supply a crafted arbitrary script and execute it.

The WPC Admin Columns plugin for WordPress is vulnerable to privilege escalation in versions 2.0.6 to 2.1.0. This is due to the plugin not properly restricting user meta values that can be updated through the ajaxeditsave() function. This makes it possible for authenticated attackers, with Subscriber-level access and above, to update their role to that of an administrator.

A CSV injection in the codepress-admin-columns (aka Admin Columns) plugin 3.4.6 for WordPress allows malicious users to gain remote control of other computers. By choosing formula code as his first or last name, an attacker can create a user with a name that contains malicious code. Other users might download this data as a CSV file and corrupt their PC by opening it in a tool such as Microsoft Excel. The attacker could gain remote access to the user's PC.

The Admin Columns WordPress plugin Free before 4.3.2 and Pro before 5.5.2 allowed to configure individual columns for tables. Each column had a type. The type "Custom Field" allowed to choose an arbitrary database column to display in the table. There was no escaping applied to the contents of "Custom Field" columns.