The Team Members plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the first and last name fields in all versions up to, and including, 5.3.5 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

The Team WordPress plugin before 4.4.2 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfilteredhtml capability is disallowed (for example in multisite setup).

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Team Members allows Stored XSS.This issue affects Team Members: from n/a through 5.3.3.