CVE-2024-11330 is a reflected XSS vulnerability in the wpcodefactory Custom CSS, JS & PHP WordPress plugin (versions up to and including 2.3.0). The issue arises from the plugin's use of add_query_arg and remove_query_arg functions without proper escaping of URL parameters, allowing injection of malicious scripts. An unauthenticated attacker can exploit this by crafting a URL that, when visited by a user, executes arbitrary JavaScript in the user's browser context. This vulnerability affects the confidentiality and integrity of user interactions on affected sites.

Successful exploitation can lead to execution of arbitrary scripts in the context of the victim's browser, potentially allowing theft of sensitive information or manipulation of site content as viewed by the user. There is no direct impact on system availability. The vulnerability requires user interaction (clicking a malicious link) and does not require authentication.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should avoid clicking suspicious links related to the affected plugin and consider disabling or removing the plugin if possible. Monitor the vendor's channels for updates and apply any official patches promptly once available.