WPC Admin Columns < 2.3.4 - Subscriber+ Arbitrary User/Post/Term Meta Disclosure

The WPC Admin Columns WordPress plugin before 2.3.4 does not have authorisation checks in one of its AJAX actions, allowing users with a role as low as subscriber to read arbitrary user, post and term metadata, including data belonging to administrators.

Admin Columns Free < 4.3 & Pro < 5.5.1 - Admin+ Stored XSS in Label

The Admin Columns WordPress plugin before 4.3 and Admin Columns Pro WordPress plugin before 5.5.1 do not sanitise and escape its Label settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup)

Admin Columns Free (< 4.3.2) & Pro (< 5.5.2) - Authenticated Stored Cross-Site Scripting (XSS) in Custom Field

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.

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.