File Upload Bypass Payload Generator

Modern File Upload Bypass Payloads

File upload bypass techniques are crucial for CTF, bug bounty, and advanced web exploitation. Use these payloads to trick file extension, content-type, or magic number checks, bypassing blacklists and weak server validation. Every bypass is paired with usage notes and ready for copy-paste into Burp Suite, curl, or browser tests.

• Double extension, null byte, .phar, MIME override, magic number, and polyglot filename tricks
• Copy-paste payloads with one click
• Each technique comes with real-world usage tips and CTF-proven success

Security, CTF, and Bug Bounty Notes

These payloads are intended for legal pentesting, CTF, or training only. Always test on authorized targets. Some filters may require further obfuscation or combo payloads—try filename mutation or upload via different HTTP headers for even more evasion.