Directory traversal vulnerability in admin-files/ad.php in Campsite 3.3.0 RC1 allows remote attackers to read and possibly execute arbitrary local files via a .. (dot dot) in the GLOBALS[g_campsiteDir] parameter.
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.