4D WebSTAR 5.3.2 and earlier allows local users to read and modify arbitrary files via a symlink attack.
https://exchange.xforce.ibmcloud.com/vulnerabilities/16689
https://euvd.enisa.europa.eu/vulnerability/EUVD-2004-0697
http://www.atstake.com/research/advisories/2004/a071304-1.txt