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File Uploading in PHP
file_management [GetSimple CMS Wiki]
GitHub - jra89/CVE-2019-19634: This is a filter bypass exploit that results in arbitrary file upload and remote code execution in class.upload.php <= 2.0.4
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How to Create Custom Filters and Actions for Wordpress File Upload Plugin - Iptanus
Bypass file upload filter with .htaccess // Personnal security blog
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