Deactivate and delete. This plugin has been closed as of March 23, 2022 and is not available for download. This closure is temporary, pending a full review.
Harald Eilertsen discovered and reported this Remote Code Execution (RCE) vulnerability in WordPress Member Hero Plugin. This could allow a malicious actor to execute commands on the target website. This can be used to gain backdoor access to then take full control of the website. This vulnerability has not been known to be fixed yet.