This vulnerability is an instance of CWE-79, improper neutralization of input during web page generation, resulting in cross-site scripting (XSS). It affects WPIDE – File Manager & Code Editor versions up to 3.5.7, allowing unauthenticated attackers to inject malicious scripts. The CVSS 3.1 base score is 7.1, reflecting network attack vector, low attack complexity, no privileges required, user interaction required, scope change, and low impact on confidentiality, integrity, and availability. The vulnerability is published and assigned CVE-2026-66440 but lacks an official remediation level or patch information.

Successful exploitation could allow an unauthenticated attacker to execute arbitrary scripts in the context of the affected application, potentially leading to partial compromise of confidentiality, integrity, and availability. The CVSS vector indicates limited but notable impact, with user interaction required and a scope change.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should consider restricting access to the affected plugin or disabling it if feasible. Monitor vendor channels for updates.