A critical security vulnerability has been identified in the “Profile Box Shortcode And Widget” plugin for WordPress, marked as CVE-2024-1401. This flaw enables attackers to execute malicious scripts and potentially create backdoors through the plugin’s functionality. In this article, we delve into the discovery of the vulnerability, understand the implications of Stored XSS in WordPress, explore the exploitation process, discuss potential risks and real-world scenarios, and conclude with recommendations for enhanced security measures. As a result, high privilege users such as administrators can exploit this flaw to execute malicious scripts, potentially leading to account takeover (if an attacker has previously hijacked an administrator or editor account, he can plant a backdoor to regain access back).