REDCap before 5.0.4 and 5.1.x before 5.1.3 does not reject certain undocumented syntax within branching logic and calculations, which allows remote authenticated users to bypass intended access restrictions via (1) the Online Designer or (2) the Data Dictionary upload, as demonstrated by an eval call.

A reflected XSS vulnerability exists in REDCap before 12.04.18 in the Alerts & Notifications upload feature. A crafted CSV file will, when uploaded, trigger arbitrary JavaScript code execution.

A stored cross-site scripting (XSS) vulnerability in the new REDCap project creation function of Vanderbilt REDCap 13.1.35 allows attackers to execute arbitrary web scripts or HTML via injecting a crafted payload into the project title parameter.

REDCap 14.3.13 allows an attacker to enumerate usernames due to an observable discrepancy between login attempts.

Cross-site scripting (XSS) vulnerability in REDCap before 5.0.6 allows remote attackers to inject arbitrary web script or HTML via vectors involving the Graphical Data View & Descriptive Stats page.