The echo directly outputs the parameter $_GET['key'] without any sanitization. This makes it susceptible to Cross-Site Scripting (XSS) attacks. As a result, attackers can exploit this vulnerability by injecting malicious html code with $_GET['key']
To fix this vulnerability, we recommend that developers implement properly sanitize (e.g., htmlspecialchars()) for user input before displaying it on the webpage.
Recently, our team found a reflected cross-site scripting (XSS) vulnerability The vulnerability logic is present in the file: https://github.com/LibreHealthIO/lh-ehr/blob/master/interface/billing/get_claim_file.php#L25
The
echodirectly outputs the parameter$_GET['key']without any sanitization. This makes it susceptible to Cross-Site Scripting (XSS) attacks. As a result, attackers can exploit this vulnerability by injecting malicious html code with$_GET['key']To fix this vulnerability, we recommend that developers implement properly sanitize (e.g.,
htmlspecialchars()) for user input before displaying it on the webpage.