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Exposing an endpoint to accept public files presents significant security risks. Implement these constraints to protect your infrastructure. Strict MIME-Type Validation

Never trust the raw $file['name'] . Use pathinfo() to isolate the true final extension and completely rename the file to a randomized cryptographic string (e.g., md5 or openssl_random_pseudo_bytes ) before writing it to disk. MIME-Type Spoofing katsem file upload full