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.
Improper Limitation of a Pathname to a Restricted Directory The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.