The Uix Page Builder plugin uses user supplied data in web pages without proper sanitization, enabling a reflected cross-site scripting (XSS) flaw. An attacker can embed malicious script code that is returned to the victim's browser during page rendering, giving the attacker the ability to execute code in the context of that browser session.

Any WordPress installation that has the UIUX Lab Uix Page Builder plugin installed in a version up to and including 1.7.3 is affected.

With a CVSS score of 7.1 the flaw is considered high severity, while an EPSS score of less than 1% indicates a low observed exploitation probability and the vulnerability is not listed in CISA's KEV catalog. The typical attack vector for reflected XSS is through user-controllable input that the plugin renders without escaping, such as query parameters or form fields. Exploitation requires the plugin to be active and the page to display the reflected data, and it only impacts the victim's browser context rather than the server or other users.