The Team Members WordPress plugin before 5.2.1 does not sanitize and escapes some of its settings, which could allow high-privilege users such as editors to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example, in a multisite setup).
https://wpscan.com/vulnerability/921daea1-a06d-4310-8bd9-4db32605e500