CVE-2017-7204: imdbphp Cross-Site Scripting (XSS)

The XSS vulnerability in imdbphp 5.1.1 stems from direct output of the $_GET['name'] parameter without proper escaping in search.php. While the patch introduced the esc() function to sanitize output, the vulnerable version lacked this mitigation. The root cause is not a specific vulnerable function but rather the absence of output sanitization in template rendering (echo $_GET['name'] in search.php). Since PHP's echo is a language construct and not a function, and the vulnerability arises from missing sanitization logic rather than a flawed function, no specific functions meet the criteria for inclusion.