LabKey Server Community Edition before 18.3.0-61806.763 contains an open redirect vulnerability via the /__r1/ returnURL parameter, which allows an attacker to redirect a user to a malicious site and possibly obtain sensitive information, modify data, and/or execute unauthorized operations.
View the template here CVE-2019-3912.yaml
References:
https://nvd.nist.gov/vuln/detail/CVE-2019-3912