phpGraphy before 0.9.13a does not properly unset variables when the input data includes a numeric parameter with a value matching an alphanumeric parameter's hash value, which allows remote attackers to execute arbitrary PHP code by uploading a config.php file via the pictures[] parameter to index.php. NOTE: it could be argued that this vulnerability is due to a bug in the unset PHP command (CVE-2006-3017) and the proper fix should be in PHP; if so, then this should not be treated as a vulnerability in phpGraphy.

phpGraphy 0.9.11 and earlier allows remote attackers to bypass authentication and gain administrator privileges via a direct request to index.php with the editwelcome parameter set to 1, which can then be used to modify the main page to inject arbitrary HTML and web script. NOTE: XSS attacks are resultant from this issue, since normal functionality allows the admin to modify pages.