This vulnerability (CVE-2026-66694) affects Thrive Architect versions <= 10.9.3.1 and is an unauthenticated cross-site scripting (XSS) issue. It arises from improper neutralization of input during web page generation, allowing attackers to inject malicious scripts that could impact confidentiality, integrity, and availability. The CVSS 3.1 base score is 7.1, reflecting network attack vector, low attack complexity, no privileges required, user interaction required, and a scope change with partial impacts on confidentiality, integrity, and availability.

Successful exploitation could allow an attacker to execute arbitrary scripts in the context of the affected application, potentially leading to data disclosure, modification, or disruption of service. The vulnerability affects confidentiality, integrity, and availability at a low level. However, no active exploitation has been reported.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, users should consider applying any recommended workarounds from the vendor or limit exposure by restricting access to affected versions. Monitor official Thrive Themes communications for updates.