acc-check-output-encoding
Output Encoding Security Check
Analyze PHP code for XSS and output encoding vulnerabilities.
Detection Patterns
1. Missing HTML Encoding
// CRITICAL: Direct echo of user input
echo $_GET['name'];
echo $user->getBio();
// CRITICAL: In HTML attribute
<input value="<?= $value ?>">
<a href="<?= $url ?>">
// CRITICAL: In JavaScript context
<script>var name = "<?= $name ?>";</script>
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