Introducing the URL validation bypass cheat sheet
Summary: PortSwigger researcher @zakfedotkin published a URL Validation Bypass Cheat Sheet on 3 September 2024, an interactive web application that consolidates known payloads for exploiting URL parsing discrepancies. The tool offers three contexts, six payload wordlist types, string encoding options, and IPv4-to-IPv6-mapped conversion, with payloads published on PortSwigger's GitHub account.
Key Takeaway: URL validation bypasses are named as the root cause of numerous SSRF, CORS misconfiguration, and open redirection vulnerabilities, and the article states many of these techniques were poorly documented and overlooked until now.
Read the original at PortSwigger Research ↗
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