Absolute path traversal vulnerability in Cross-RSS (wp-cross-rss) plugin 1.7 for WordPress allows remote attackers to read arbitrary files via a full pathname in the rss parameter to proxy.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.