CVE-2026-66607 is an unauthenticated cross-site scripting (XSS) vulnerability classified under CWE-79 in the ThemeHunk Advance Product Search plugin. It affects versions up to 1.4.8 and allows attackers to inject malicious scripts into web pages generated by the plugin. The vulnerability has a CVSS 3.1 base score of 7.1, indicating high severity with network attack vector, low attack complexity, no privileges required, user interaction required, and impacts on confidentiality, integrity, and availability. No patch or official remediation level has been published yet.

Successful exploitation could allow an attacker to execute arbitrary scripts in the context of the affected web application, potentially leading to partial compromise of confidentiality, integrity, and availability of the affected system. Since the vulnerability is unauthenticated, it can be exploited by remote attackers without credentials. However, user interaction is required to trigger the malicious script execution.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should consider applying temporary mitigations such as disabling or restricting the vulnerable plugin if feasible, and monitoring for suspicious activity related to this vulnerability.