PortSwigger Updates URL Validation Bypass Cheat Sheet with New Payloads
PortSwigger Research has released a significant update to its URL Validation Bypass Cheat Sheet, introducing new techniques and tools for web security professionals. The update features an improved IP address calculator inspired by community contributions, supporting novel IPv4 formats such as Partial Decimal and Mixed Encodings compatible with major browsers like Chrome, Firefox, and Safari. Additionally, the tool now handles IPv6 addresses, including those with embedded IPv4 structures, and offers advanced encoding options like Circled Latin letters. A key addition is a new payload targeting userinfo parsing discrepancies in Spring’s UriComponentsBuilder, which can lead to Server-Side Request Forgery (SSRF) or open redirect vulnerabilities. The accompanying CORS Bypass Cheat Sheet was also updated with techniques exploiting localhost regex implementations and Safari-specific domain splitting attacks. These updates highlight the collaborative nature of the web security community, incorporating submissions from researchers to help identify real-world vulnerabilities. The article serves as a technical resource for developers and security testers aiming to strengthen URL validation mechanisms against emerging bypass methods.
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PortSwigger Updates URL Validation Bypass Cheat Sheet with New Payloads
PortSwigger Research has released a significant update to its URL Validation Bypass Cheat Sheet, introducing new techniques and tools for web security professionals. The update features an improved IP address calculator inspired by community contributions, supporting novel IPv4 formats such as Partial Decimal and Mixed Encodings compatible with major browsers like Chrome, Firefox, and Safari. Additionally, the tool now handles IPv6 addresses, including those with embedded IPv4 structures, and offers advanced encoding options like Circled Latin letters. A key addition is a new payload targeting userinfo parsing discrepancies in Spring’s UriComponentsBuilder, which can lead to Server-Side Request Forgery (SSRF) or open redirect vulnerabilities. The accompanying CORS Bypass Cheat Sheet was also updated with techniques exploiting localhost regex implementations and Safari-specific domain splitting attacks. These updates highlight the collaborative nature of the web security community, incorporating submissions from researchers to help identify real-world vulnerabilities. The article serves as a technical resource for developers and security testers aiming to strengthen URL validation mechanisms against emerging bypass methods.
PortSwigger Research