CVE-2015-1398
a vulnerability classified as critical was found in magento. Affected by this vulnerability is the function blockDirective of the file index.php. The manipulation of the argument ___directive with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is CWE-22. The software 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 software 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. As an impact it is known to affect confidentiality, integrity, and availability.
The target web application is running Magento 1.9, and it suffers from this vulnerability
An exploit is available