CVE-2017-20288

QCubed 2.2.0 through 3.1.1 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject scripts through the installation path parameter. Attackers can craft GET requests to /assets/php/ devtools/installer/step 2.php with malicious installation path values echoed unescaped, executing JavaScript in victims' browsers. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-10-20.