PHP remote file inclusion vulnerability in calendar.php in SoftComplex PHP Event Calendar 1.4 allows remote attackers to execute arbitrary PHP code via a URL in the path_to_calendar parameter, which overwrites the $path_to_calendar variable from an extract function call.

Cross-site scripting (XSS) vulnerability in Softcomplex PHP Event Calendar 1.5 allows remote authenticated users to inject arbitrary web script or HTML, and corrupt data, via the (1) username and (2) password parameters, which are not sanitized before being written to users.php. NOTE: while this issue was originally reported as XSS, the primary issue might be direct static code injection with resultant XSS.

SQL injection vulnerability in search.php for PHP-Calendar before 0.10.3 allows remote attackers to execute arbitrary SQL commands via unknown vectors.

Multiple PHP remote file inclusion vulnerabilities in Sean Proctor PHP-Calendar before 0.10.1, as used in Commonwealth of Massachusetts Virtual Law Office (VLO) and other products, allow remote attackers to execute arbitrary PHP code via a URL in the phpc_root_path parameter to (1) includes/calendar.php or (2) includes/setup.php.

The Event Calendar module 2.13 for PHP-Nuke allows remote attackers to gain sensitive information via an HTTP request to (1) config.php, (2) index.php, or (3) submit.php, which reveal the full path in an error message.

Cross-site scripting (XSS) vulnerability in the Event Calendar module 2.13 for PHP-Nuke allows remote attackers to execute arbitrary web script via the (1) type, (2) day, (3) month, or (4) year parameters in a Preview operation, or (5) event comments.