SimplyRETS Real Estate IDX versions <= 3.2.8 contain an unauthenticated Cross Site Scripting (XSS) vulnerability (CWE-79). This flaw allows attackers to inject malicious scripts that can execute in the context of the victim's browser without requiring authentication. The CVSS 3.1 base score is 7.1, reflecting network attack vector, low attack complexity, no privileges required, user interaction required, and impacts on confidentiality, integrity, and availability. There is no indication of known exploits in the wild or vendor-provided patches at this time.

Successful exploitation of this vulnerability could allow an attacker to execute arbitrary scripts in the context of users visiting the affected SimplyRETS Real Estate IDX application. This may lead to theft of sensitive information, session hijacking, or other malicious actions impacting confidentiality, integrity, and availability of the application and its users.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, consider applying web application firewall (WAF) rules to detect and block XSS payloads and review input validation and output encoding practices in the application to mitigate risk.