LimeSurvey before v3.17.14 allows reflected XSS for escalating privileges from a low-privileged account to, for example, SuperAdmin. This occurs in application/core/Survey_Common_Action.php,
https://www.limesurvey.org/limesurvey-updates/2188-limesurvey-3-17-14-build-190902-released
https://seclists.org/bugtraq/2019/Sep/27
https://github.com/LimeSurvey/LimeSurvey/commit/f1c1ad2d24eb262363511fcca2e96ce737064006
http://seclists.org/fulldisclosure/2019/Sep/22
http://packetstormsecurity.com/files/154479/LimeSurvey-3.17.13-Cross-Site-Scripting.html