CVE-2026-66607: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in ThemeHunk Advance Product Search

This vulnerability (CVE-2026-66607) is an improper neutralization of input during web page generation (CWE-79) in the ThemeHunk Advance Product Search plugin, affecting versions up to 1.4.8. It permits unauthenticated cross-site scripting attacks, which can be exploited remotely without privileges. The CVSS 3.1 base score is 7.1, reflecting network attack vector, low attack complexity, no privileges required, user interaction required, scope changed, and low impact on confidentiality, integrity, and availability.

Successful exploitation can allow an attacker to execute arbitrary scripts in the context of the affected web application, potentially leading to partial disclosure of sensitive information, modification of data, or disruption of service. The vulnerability affects confidentiality, integrity, and availability to a limited extent as indicated by the CVSS vector.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, consider applying input validation or output encoding workarounds if feasible. Monitor official ThemeHunk channels for updates.