A cross-site scripting (XSS) vulnerability in uploadConfirm.php of LimeSurvey v5.3.9 and below allows attackers to execute arbitrary web scripts or HTML via a crafted plugin.
SQL injection vulnerability in Limesurvey (a.k.a PHPSurveyor) before 1.91+ Build 120224 and earlier allows remote attackers to execute arbitrary SQL commands via the fieldnames parameter to index.php.