Directory traversal vulnerability in inc/autoload.function.php in GLPI before 0.84.8 allows remote attackers to include and execute arbitrary local files via a .._ (dot dot underscore) in an item type to the getItemForItemtype, as demonstrated by the itemtype parameter in ajax/common.tabs.php.
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.