vBulletin 3.x.x and 4.2.x through 4.2.5 contains an open redirect vulnerability via the redirector.php URL parameter. An attacker can redirect a user to a malicious site and possibly obtain sensitive information, modify data, and/or execute unauthorized operations.
View the template here CVE-2018-6200.yaml
References:
https://nvd.nist.gov/vuln/detail/CVE-2018-6200