Multiple directory traversal vulnerabilities in the iBrowser plugin library, as used in Open Journal Systems before 2.3.7, allow remote authenticated users to (1) delete or (2) rename arbitrary files via a .. (dot dot) in the param parameter to lib/pkp/lib/tinymce/jscripts/tiny_mce/plugins/ibrowser/scripts/rfiles.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.