Provide references for CVE-2018-5478.
Where can I find more information about CVE-2018-5478?
References are available at: https://github.com/FriendsOfPHP/security-advisories/blob/master/contao/core/CVE-2018-5478.yaml, https://security.snyk.io/vuln/SNYK-PHP-CONTAOCORE-70397.