code/display.php in fuzzylime (cms) 3.03a and earlier, when magic_quotes_gpc is disabled, allows remote attackers to conduct directory traversal attacks and overwrite arbitrary files via a "....//" (dot dot) in the s parameter, which is collapsed into a "../" value.
https://www.exploit-db.com/exploits/8978
https://exchange.xforce.ibmcloud.com/vulnerabilities/51206