Directory traversal vulnerability in jinventory.php in the JInventory (com_jinventory) component 1.23.02 and possibly other versions before 1.26.03, a module for Joomla!, allows remote attackers to read arbitrary files via a .. (dot dot) in the controller parameter to index.php.
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.