QCubed 2.2.0 through 3.1.1 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject scripts through the installationpath parameter. Attackers can craft GET requests to /assets/php/devtools/installer/step2.php with malicious installationpath values echoed unescaped, executing JavaScript in victims' browsers. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-10-20.

A PHP object injection bug in profile.php in qcubed (all versions including 3.1.1) unserializes the untrusted data of the POST-variable "strProfileData" and allows an unauthenticated attacker to execute code via a crafted POST request.

A SQL injection vulnerability in qcubed (all versions including 3.1.1) in profile.php via the strQuery parameter allows an unauthenticated attacker to access the database by injecting SQL code via a crafted POST request.

A reflected cross-site scripting (XSS) vulnerability in qcubed (all versions including 3.1.1) in profile.php via the stQuery-parameter allows unauthenticated attackers to steal sessions of authenticated users.