Drupal investigation

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zend-escaper

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The OWASP Top 10 web security risks study lists Cross-Site Scripting (XSS) in second place. PHP’s sole functionality against XSS is limited to two functions of which one is commonly misapplied. Thus, the zend-escaper component was written. It offers developers a way to escape output and defend from XSS and related vulnerabilities by introducing contextual escaping based on peer-reviewed rules.