https://portswigger.net/research/introducing-the-url-validation-bypass-cheat-sheet
Introducing the URL validation bypass cheat sheet | PortSwigger Research
URL validation bypasses are the root cause of numerous vulnerabilities including many instances of SSRF, CORS misconfiguration, and open redirection. These...
url validationcheat sheet
https://blog.sicuranext.com/breaking-down-multipart-parsers-validation-bypass/
Breaking Down Multipart Parsers: File upload validation bypass
TL;DR: Basically, all multipart/form-data parsers fail to fully comply with the RFC, and when it comes to validating filenames or content uploaded by users,...
file uploadvalidation bypass