PHP remote file inclusion vulnerability in common.php in Hinton Design PHPHD Download System (phphd_downloads) allows remote attackers to execute arbitrary PHP code via a URL in the phphd_real_path parameter. NOTE: this issue may be present in versions from 2006.

check.php in Hinton Design phphd 1.0 does not check passwords when certain cookies are provided, which allows remote attackers to bypass authentication.

Multiple SQL injection vulnerabilities in Hinton Design phphd 1.0 allow remote attackers to execute arbitrary SQL commands via (1) the username parameter to check.php or (2) unknown attack vectors to scripts that display information from the database.

Cross-site scripting (XSS) vulnerability in add.php in Hinton Design phphd 1.0 allows remote attackers to inject arbitrary web script or HTML via unknown vectors.